AGRIC, OEPT. Painted liy Hobart Nichols THE RHODODENDRONS Country Place of Professor Charles S. Sargent, Brookline, Mass. DESIGN IN LANDSCAPE GARDENING DESIGN IN LANDSCAPE GARDENING BY RALPH RODNEY ROOT, B.S.A., M.L.A. Assistant Professor of Landscape Gardening. In charge of Pro- fessional Course, University of Illinois AND CHARLES FABENS KELLEY, A.B. Assistant Professor of Art. Head of Department of Art, Ohio State University NEW YORK THE CENTURY CO. 1914 v\ Copyright, 1914, by THE CENTURY Co. PREFACE It has seemed to the authors that there is a real need for a book which will sum up, in a compact way, the most definite principles of design as ap- plied to Landscape Gardening. As in all subjects relating to the fine and applied arts, very definite principles, rather than laws exist, though they are not always as easy of demonstration as the laws of physics and mathematics. "I confess that the great object of my ambition is not merely to produce a book of pictures, but to furnish some hints for establishing the fact, that true taste in landscape gardening, as well as in all the other polite arts, is not an accidental effect, operating on the outward senses, but an appeal to the understanding, which is able to compare, to separate, and to combine, the various external ob- jects, and to trace them to some preexisting causes in the structure of the human mind." — Humphrey Repton. That such principles exist is not a matter of com- mon knowledge or opinion, if one may judge by the PEEPACB unscientific discussions of landscape gardening which at the present time are appearing in un- precedented numbers. It cannot be denied that landscape has a dis- tinctly emotional value, but book-discussions of this nature have always seemed futile to the au- thors. Though considerable in bulk, these books are of slight real value because of their unsystem- atic recording of principles, and limited range. This book is based largely upon lectures offered in the department of landscape gardening at the University of Illinois. The subject of plant color and the theory of color planting is given to the public with some reluctance. In spite of much time and study it still seems inadequate. The sub- ject is, however, presented from a new standpoint and it is hoped that other workers in the same field may make much further progress along the way here pointed out. Through this book the terms landscape architect, landscape gardener, and landscape designer, have been used interchangeably. There are strong par- tizans for each of these appellations, who can see no good in the employment of the other two. In the voluminous articles published in support of these views, nothing has appeared so convincing PEEFACE as to prejudice the authors in favor of any definite and exclusive title. In fact they feel that bicker- ing on matters of terminology where the subject matter is universally agreed upon is apt to denote a tendency to decadence, rather than to vigorous constructive work. The authors are indebted to Professor J. C. Blair, Professor Charles Mulford Robinson, Pro- fessor H. B. Dorner, Mr. F. A. C. Smith, of the University of Illinois and Mr. G. R. Forbes, of New York, for their courtesy in allowing them to reproduce several of the photographs used as illus- trations. Some of the illustrations, several of the plans, for instance, are copies made from the work of students at the University of Illinois. Some were redrawn, others were used exactly as pre- sented. The drawings are the work of C. F. Kel- ley. September 29, 1914. CONTENTS CHAPTEB PAGE I ELEMENTS OF LANDSCAPE DESIGN 3 Architecture 5 Sculpture 12 Painting . . 14 Agriculture 15 Horticulture 16 Engineering 17 II DESIGN 20 III COLOR 85 IV PLANTING 105 V PROBLEMS 159 Cooperative Landscape-gardening 159 An American Home 168 Small Places . . 178 School Grounds 190 Golf-course ... 196 A Country Estate 204 VI GARDEN DESIGN 218 INDEX .267 LIST OP ILLUSTRATIONS PAGE The Rhododendrons Frontispiece Figure 1. Pompeian Garden as an Outdoor Room 9 Figure 2. Durham Cathedral 23 Figure 3. The Torii at Miyajima, Japan 26 Figure 4. Two different elevations of the same plan 29 Figure 5. Fountain from the Boboli Gardens, Florence, Italy . . 32 Figure GA. Scheme for the " naturalization " of the fountain from the Boboli Gardens 33 Figure 6e. Another scheme for the " naturalization " of the fountain from the Boboli Gardens 35 Figure 7. Planting to break the line of transition between a build- ing and its surroundings 38 Figure 8. A formal plan showing strongly marked geometrical character of divisions 47 Figure 9. Garden as an outdoor room, Villa Albani, Rome . . 49 Figure 10. Informal planting plans 52 Figure 11. A Japanese garden 55 Figure 12. Rhododendrons in the Sargent garden, Holm Lea, Brook- line, Mass 60 Figure 13. Three plans to illustrate the flexible character of in- formal planting masses 62 Figure 14. Informal and formal balances 65 Figure 15. Repetition of similar tree forms, Hill-Top, Fiesole, Italy 68 Figure 16. Carpeau's Fountain, Luxembourg Gardens, Paris . . 73 Figure 17. The geometrical basis of the plan in formal design . . 76 Figure 18. The geometrical basis of the plan in informal design 79 Figure 19. Diagram of complementary colors 87 Figure 20. Diagram of seasonal color changes 90 LIST OF ILLUSTEATIONS PAGE Figure 21. Hillside planting to produce illusions of grade . . .106 Figure 22. The sort of thing that demands screening . . . .110 Figure 23. Private grounds that are not too secluded in appearance 114 Figure 24. Horticultural accents 118 Figure 25. A colonial garden 122 Figure 26. Villa Aldobrandini, Frascati, Italy 127 Figure 27. Enframement of vista from Villa Medici, Rome . . . 129 Figure 28. Woodland planting 131 Figure 29. A pictorial composition in wild planting 135 Figure 30. Gardenesque planting 139 Figure 31. Park-like planting at Warwick, England 142 Figure 32. Tree forms 143 Figure 33. Rose of Sharon 146 Figure 34. The Golden Elder 146 Figure 35. Snowberry 146 Figure 36., Faulkner Farm 155 Figure 37. Repetition of geological characteristics in tree forms . . 166 Figure 38. East Avenue, Rochester, N. Y 170 Figure 39. Bald treatment of a small city street 175 Figure 40. Unkempt surroundings 175 Figure 41. Plan for the development of a suburban residence . .179 Figure 42. Planting for color effect 182 Figure 43. Plan for the development of a suburban residence . . 185 Figure 44. Attractive and practical school surroundings . . . .188 Figure 45. Proposed arrangement of a new golf course for the Uni- versity of Illinois 197 Figure 46. Proposed development of a new golf course .... 198 Figure 47. Horticultural accents 201 Figure 48. Holm Lea, Brookline, Mass 208 Figure 49. Montacute House 212 Figure 50. A plan for a country estate 215 Figure 51. A second plan for a country estate 222 Figure 52. The garden as an outdoor room, Villa Pamphili Doria, Rome . 225 LIST OF ILLUSTRATIONS PAGE Figure 53. Lavish architectural treatment, Villa Albani, Rome . 229 Figure 54. Architectural predominance, Villa d'Este, Tivoli, Italy 234 Figure 55. Combination of architectural and horticultural accent material to emphasize a vista, Villa d'Este . . . 236 Figure 56. Terrace garden 238 Figure 57. Garden Temple at Montacute House, England . . . .241 Figure 58. Topiary work . 243 Figure 59. A typical Italian garden plan, Villa d'Este .... 249 Figure 60. A garden at Milton, Mass., illustrating a good use of bedding plants 253 Figure 61. Architectural vases used to introduce plant color, Villa Lante, Bagnaia, Italy 256 Figure 62. Fountain at Villa Borghese, Rome 257 Figure 63. Pompeian fountain head 258 Figure 64. Stairway at the Villa d'Este 259 Figure 65. Retaining wall at Villa Falconieri, Frascati, Italy . . 263 LANDSCAPE GARDENING LANDSCAPE GARDENING i ELEMENTS OF LANDSCAPE DESIGN AT the present time in America people are much more sensitive to their home surroundings, as far as appearances are concerned, than they were thirty years ago. Then their intelligent interest stopped with bricks and shingles; now it is often carried as far as the street, and the grounds receive a fair share of attention. Perhaps one reason for this change is the American's ever-increasing amount of foreign travel, with the chance to behold not only the masterly gardens of antiquity, but those of modern times as well. By contrast, his own home surroundings have revealed to his edu- cated sense their uncompromising ugliness. General landscape-work is apt to appear long after the pioneer stage in any country. In the last twenty years, however, a strong school of land- scape-men has risen in this country, and their work has been a very potent factor in the education of 4 ^LANDSCAPE GARDENING public taste and the creation of a demand for in- telligent landscape-designing. It is necessary to recognize at the outset that love for nature, admiration of a beautiful view, and delight in the brilliant colors of flowers, are only a slight part of the equipment of a landscape- designer. These are essential indeed, but without further equipment the landscape-man will make pointless suggestions and create ludicrous designs. In order to make a worthy design, discrimina- tion must be employed, and that is always based upon sound knowledge and no slight experience. Consequently, the landscape-man must familiarize himself with all phases of his art, from the con- tagious diseases of plants to the proper methods of road construction. This is not the work of a tyro, nor of one who gushes about the sovereignty of Art, with a capital A, and proclaims his superiority to all rules. It is for the careful student, the well- balanced man of taste and cultivation, to find his work and pleasure in landscape-design. In working out a problem in landscape archi- tecture, the factors with which the designer is most concerned may be roughly divided into seven groups, which fall naturally into two large divi- sions. ELEMENTS OF LANDSCAPE DESIGN 5 The first of these divisions may be called the esthetic arts, under which come architecture, sculp- ture^ and painting. The second division is termed the practical arts, which comprise engineering, agriculture, horticul- ture, and forestry. In the final results in design it will be seen that the esthetic arts have been used in a practical way, and the practical arts have been used in an esthetic way. A brief recapitulation of the members of these groups will perhaps place the subject of landscape-design in a clearer light. ARCHITECTURE Architecture has been defined as everything from " frozen music" to the "art of beautiful building." Whatever it may be, it must be useful as well as beautiful in order to fulfil its purpose satisfactorily. The rooms must be large enough to satisfy the requirements of practicability, and their arrangement must not interfere with their use. The outside of the building should express the inside, or the design will not be straightfor- ward. It must be attractive in order to give pleas- ure to those who use it and those who see it. To that end every part of it, inside and outside, must be arranged to the best advantage. Stripping all 6 LANDSCAPE GAKDENING sentiment from the definition, it may be said that architecture is a study of composition in plan and elevation, practicability being an indispensable minimum requirement. The plan of a building, which is the primary consideration, is influenced directly by the kind and number of rooms required ; and in the exterior expression of the arrangement of these essential units the elevation must not only express the plan, but must harmonize with its natural sur- roundings. If at this point the architect will consult an ex- perienced landscape-designer, he will find his ad- vice of great assistance. It is important that the landscape man's attitude should influence the placing of windows, since the outlook from a house should command all interesting and beauti- ful features, and omit all others as far as possible. The landscape-designer, from the very nature of his work, is sure to feel more strongly than the architect the importance of exposure and outlook. It is this which makes his advice on f enestration invaluable, and the character of the elevation will to a certain extent be made or marred by the placing of the windows. The appearance of the windows from without, which will affect the har- ELEMENTS OF LANDSCAPE DESIGN 7 monization of the house with the landscape by which it is surrounded, is of equal importance with their outlook from within the house. This har- monization is often further to be achieved and perfected by the grading and planting required to make the landscape agree to some extent with the house, and this the landscape-man himself should do. As far as possible, the architecture should appear to be an integral part of the landscape. In other words, it must be "in character." In landscape design, as in architecture, the plan is the primary consideration, and no progress can be made until it has been decided upon. It is in- fluenced directly by the kind of problem and the particular requirements of the problem. To be successful, the elevation must express the plan, and must of course harmonize with the important natural features of the landscape. The result, whether formal or not, must appear to be sponta- neous. The main factor in the development of the de- sign at this point will be the character of the lines which dominate the landscape. If the country is rolling and sparsely settled, as in most middle Western States, it is probable that a building with informal lines, asymmetrical and of a rambling 8 LANDSCAPE GAKDENING type, will seem most in keeping with the surround- ings, and because of the absence of natural plant growth in the landscape, all planting features, in order to harmonize, must be used in connection with the building. If decorative planting is scat- tered, it will destroy unity of interest by breaking up the dominant features of the landscape, and the charm of the rolling country, as contrasted with the planting in the immediate vicinity of the house, will be minimized, with a distinct loss of beauty. A, natural landscape of an entirely different type is brought out to advantage by many of the chateaux of Prance and the castles of the Ehine, where the precipitous lines of the crags on which they stand are repeated in the graceful upshoot of the turrets and the steep and jagged pitch of the roofs. In city building, of course, there enters a for- mal element which has not been taken into consid- eration in the foregoing examples. Here at once occurs the differentiation of the two types of land- scape architecture, the formal and the informal. In the city, lines are sure to be straight, rectan- gular, and artificial. There is a primness and an unnaturalness in the constructive lines of city FIGURE 1. POMPEIAX GARDEN AS AX OUTDOOR ROOM ELEMENTS OF LANDSCAPE DESIGN 11 planning which it is necessary for landscape-ar- chitects to consider and to repeat in their designs. A certain stiffness in the arrangement of the planting, which would be entirely out of place in a country residence, is only to be expected here. City planting, necessarily highly formalized, may consist chiefly in the arrangement of the trees and shrubs in a regular way or in the selec- tion of formal types of plants. In suburban planting, where the location partakes both of the nature of the city and the country, more natural- istic types of planting may be introduced to ad- vantage. So much should the house appear to be an in- tegral part of the landscape, and so thoroughly should the elevation express the plan, that if it is found that the elevation does not harmonize with its natural surroundings, it is certain either that it does not express the plan or that the plan should be reworked. Architectural accessories, such as gates, steps, balustrades, walls, and pergolas, are often used as enriching features in landscape-design, and as such are frequently employed in a decorative rather than in a constructive way. Where judi- ciously introduced, they add dignity to the design. 12 LANDSCAPE GABDENINGl SCULPTFKE Sculpture has always played a very important part in garden design, as well as in almost all types of monumental and public planting. Less formal than architecture, it may be used to great advantage as an accent with informal planting schemes, where it adds the element of contrast. Sculpture was an important feature in the early gardens of Egypt. In the garden of the King of Thebes, for instance, it was used as a con- trolling element in the design. In the Eoman gardens of Pompeii (Fig. 1) and Herculaneum the sculpture was used in an axial way, appearing on the axes of corridors, walks, and streets, mainly as an accent, although fre- quently employed to enrich other garden features. The forms themselves were of secondary impor- tance; their position and function was the prime interest. The early Italian gardens employ sculpture in two ways. In the formal treatment hermaB served as an architectural feature at the intersection of walks and in connection with terraces, walls, and ornamental gateways. Informal sculpture, such ELEMENTS OP LANDSCAPE DESIGN 13 as single figures or groups, was used with planting in the gardens where architecture was not the con- trolling feature or where the architectural element was at some distance. These same phases con- tinue in the later gardens of France and England, as at Versailles, Fontainebleau, St. Cloud, and Wilton House. In America sculpture has appeared at a dis- advantage. It is used in a civic way rather than in gardens, and here, as a rule, it does not enter into the design of the park or square in which it is located, although it most certainly should. This sculpture is generally introduced from patriotic rather than from esthetic motives, as may easily be understood after the examination of a few ex- amples. In Washington, D. C., an attempt is being made to correct this incongruity between the sculpture and its surroundings by the rearrangement of planting and walks. Lincoln Park, Washington, has been helped greatly in this way. The landscape-architect who directed the work did not introduce any new ele- ments, but rearranged the jumble which he found already there, with most satisfactory results. 14 LANDSCAPE GABDENING PAINTING Various schools of painting have had a pro- found influence upon landscape design, particu- larly in England. The influence seems to have been exerted chiefly in the decorative composition of mass and space relations, as the silhouetting of planting masses against the sky and the types of planting. A book by Sir Uvedale Price upon the " Picturesque and the Beautiful," which ap- peared at the end of the eighteenth century, advo- cated the imitation of the work of Claude Lor- rain by landscape-gardeners in their planting, even to the introduction of stumps and dead trees as a part of the scheme to lend a picturesque charm ; he nevertheless admitted that formal gar- dening was best near the house. Here the roman- tic point of view seems to have been the precursor of the rustic monstrosities in cement and iron which unfortunately have a large sale even at the present day. In America the fad reached its greatest height about 1865. Cast-iron dogs, deer, and other sylvan creations must be laid at the door of painting rather than of sculpture, for the man- ufacturers of these objets d'art probably got their ELEMENTS OF LANDSCAPE DESIGN 15 inspiration from the landscape-painters of the eighteenth century. The landscape-designer may learn much from painting as regards the grouping of trees and their silhouette. He also uses painting as the most direct means of expressing his ideas to his client, for sketches of the general effect to be pro- duced by his planting usually accompany the plans. Many ideas about color combinations and possibilities may also be gained from a study of paintings. It will be seen, then, that architecture, sculp- ture, and painting are very essential factors in determining the solution of a problem for the landscape-architect, and are used by him in a prac- tical way. The second and final division of the problem of the landscape-gardener, which is composed of en- gineering, agriculture, horticulture, and forestry, may, for the purpose of this discussion, be termed the practical arts. AGRICULTURE In agriculture the landscape-architect is con- cerned primarily with the relation of the plant te 16 LANDSCAPE GABDEKCNG the soil. He considers carefully such questions as soil drainage and soil composition, from the physical and chemical point of view, to determine what plants are best adapted to each particular locality. This consideration is most essential in the planting of such species as the rhododendrons, which require that the soil contains no lime, but must possess the presence of humus. In soil drainage the landscape-architect is concerned chiefly with the draining of large areas for open lawns, leaving undrained spaces to be used for bogs and rock-gardens. Agriculture is also concerned with soil cultiva- tion, or the methods of caring for the planted areas in such a manner as to secure the best growth of plant ^materials. Another important interest included under the head of agriculture is plant pathology, under which come spraying and the control of insect pests. HORTICULTURE In horticulture the landscape-architect is con- cerned with a study of the plant as an individual, its growth, propagation, the formation of new va- rieties, pruning, spraying, and the best methods of planting and handling. ELEMENTS OF LANDSCAPE DESIGN 17 Horticulture may be divided into two classes, the economic and the decorative. The decorative aspect is of chief importance to the landscape-de- signer, as the economic side appears only in such problems as the disposition of orchards and the screening of objectionable features. This last consideration is nevertheless of as much impor- tance as the first, and is as much a question of es- thetics as of economics. The ornamental side of horticulture deals with all the plant materials used in landscape-garden- ing. The horticulturist groups these according to methods of growth, and classifies them according to size and soil requirements; but the landscape- architect primarily considers them with regard to form and color. Horticulture gives the land- scape-architect the majority of the materials with which he has to work, for he is generally called in where planting is to predominate, and he must ac- cordingly be thoroughly familiar with it. ENGINEERING Engineering in landscape problems concerns the lay of the land, the alteration of grades, the construction of topographical work, drainage, and the building of walks, bridges, and drives. Be- 18 LANDSCAPE GAKDENING fore the landscape-architect can begin his main design he must have a clear mental survey of the land with which he has to deal, and upon this he bases the large elements of his scheme ; for thereby are determined the locations of such features as house, drives, gardens, and water. Furthermore, he readjusts the contours in an esthetic way, in order to obtain an even balance in cut and fill wherever possible. In the laying out of roads, the natural profile of the road must so agree with the contour that the percentage of grade will not change too rapidly, and that later, when the engineering plan is worked out, too extensive cuts and fills will not appear, destroying the natural aspect of the sur- face. In the erection of retaining walls there must first be a raison d'etre, as well as justification from the engineering point of view, preventing too steep grades and terraces. Walls of other types are considered architecturally. In the question of engineering drainage, the landscape-designer is concerned with the combina- tion of surface and subsurface drainage. Sur- face drainage takes care of the water that is likely to destroy the best appearance of lawns and plant- ELEMENTS OF LANDSCAPE DESIGN 19 ing spaces, and Subsurface drainage looks out for the draining of garden walks, tennis-courts, and the conducting of surplus water to proper outlets. In considering the engineering features which have to do with topographical reconstruction, sta- ble bridges, and well-graded roads, all these prac- tical considerations must be subordinated to the esthetic ideal of the final appearance of the fin- ished design. But if the practical considerations are satisfactorily determined, they .will actually contribute to the beautiful solution of the prob- lem. The esthetic side of the question cannot be treated as an easily detached ornament quite apart from any vital connection with the design. No matter how useful a thing may be, we do not care for it if it is ugly. Beauty is consequently the vivifying influence, the most potent factor in de- termining the design scheme. If the designer will keep in mind in a broad way the subjects which have been classed in the prac- tical and esthetic divisions of landscape, they will be to him a rock of strength in solving his prob- lems. Too often a petty insistence on details makes one lose sight of higher, more important things, and ruins a design which has great possi- bilities for beauty. II DESIGN IT will perhaps be advantageous to give a brief summary of design in general before the specific subject of design in landscape is approached. The underlying principles of design are found in all branches of the fine and applied arts, and are the means of criticizing intelligently any object of de- sign, be it a rose-jar or a landscape. There are no such things as rules of design. One cannot learn a few formulae and then turn out satisfactory work because of having gone through a certain number of processes and made a definite number of motions. The well-trained designer always has an attitude toward his subject which will direct him in his work. The acquisition of such an attitude is a matter of deep study, and re- quires a long time and a fine enthusiasm; and of course, as is the case with everything worth while, it will ripen and change gradually as the experi- ence of the designer grows and his horizon broad- ens. 20 DESIGN 21 The designer's attitude is first one of intelligent wonderment, of inquiry as to the possibilities of the subject, and is attained through the training of the imagination. A designer who sees only one solution for every problem that comes to him is very certain to turn out inferior work. There may have been geniuses whose wrork was always the result of swift and sure intuition, but none of them is practising in landscape or any other branch of design at present. Speaking generally, the question of use is first to be considered. Use may be defined in two ways, the practical and the esthetic. Of course all design is fundamentally practical, inasmuch as it aims to give the best solution of any problem with which one is working. Whatever is to be de- signed must perform its duties thoroughly; but that is not enough. It must also perform them gracefully, for the day has gone by when it was thought that objects of use need not be attractive. In fact, if a useful object is repellent in appear- ance its very ugliness often militates against its usefulness. Every solution of a utilitarian prob- lem should appear to solve the situation so com- pletely that one cannot behold it without a feeling of satisfaction. Thus beautiful surroundings of 22 LANDSCAPE GAKDENING one sort or another are created, and these in turn have a direct influence upon the lives of those who can see them and live among them. If the design stops short with the mere fulfilling of some utilitarian purpose, it will probably not be entirely practical ; it must be satisfactory in ap- pearance as well as in use, or it will not attain the highest degree of practicability. Even though the roads be well graded, the bridges strong, the walks laid out in such a manner as to facilitate circulation, and the plant masses so located as to screen objectionable views or to enhance existing ones, the result may be beautiful ; or it may be that the strong insistence upon practicability has made the function of the various parts too obvious, and the ideas of beauty, for which the design was cre- ated, have been lost. A great deal of study is often required in order that the finished design should appear unstudied, that is to say, spontane- ous. The esthetic and the practical should always ap- pear together. It is no less necessary that the practical conjoin with the esthetic, in order that a work of design produce the greatest amount of pleasure. A picture, for instance, may be very beautiful 24 LANDSCAPE GARDENING in itself, and yet if it is hung in a dark corner, or where the light reflects from its surface so as to interfere with its enjoyment, it is decidedly out of place, and is therefore bad design. Design in this and every other case, as far as final usage is con- cerned, deals as much with the placing of the ob- ject as with the object itself. In landscape, a plant grouping or a piece of sculpture, an architectural accessory or a vista, may be beautiful in themselves, but if they are placed in wrong relation to their surroundings, they are '{bad design)" How is one to judge of the proper interrelation of the parts of a design? This is again a question of use. The province of a designer is to combine the material with which he has to work to the best possible advantage. Every part of a design must be placed where it can function freely and to the best advantage. It must not only perform its function well, but must look as if it did. Painters often meet with the reverse of this difficulty. In working out compositions where the human figure appears, they often find that it is impossible for the model to assume the supposedly graceful poses which had appeared easy to them when they were thinking only of lines and not of functions. DESIGN 25 true beauty is functional. J It is said that the hu- man body is beautiful because it expresses its functions well. The function, then, should al- ways appear unmistakably, whether it be mainly practical or esthetic or both in combination. It can safely be said that a beautiful design is never the result of chance. It is only in very rare cases that things have happened to be beautiful, at least so far as the handiwork of man is concerned. Wherever one is struck by a beautiful combina- tion of landscape and architecture, whether it be Durham Cathedral, on its river bluff, dominating the landscape (Fig. 2), or the torii of Miya- jima, enhancing the beauty of the sacred waters (Fig. 3), it is certain to be the product of consum- mate art, and not a happy accident. To be sure, the conditions of location were taken advantage of in both cases by the types of structure selected, but it was the accomplished designer who welded the diverse elements into a harmonious whole, and brought out in all its perfection the consummate work of art. D^aigiiJs an expression of man's attitude to* wards nature. It is universal, and the underlying ideas are the same in all cases. Since landscape design is only one of the kindred branches of gen- FIGURE 3. THE TORII AT MIYAJIMA, JAPAN DESIGN 27 eral design, it follows that it is exactly like all the other provinces of design, such as architecture, painting, music, and literature, so far as general principles go. Its own individual characteristics are due to the fact that the landscape-designer has certain unique conditions imposed upon him by the limitations of his problem. These conditions are quite different from those with which his brother-designers have to deal, but he has also the satisfaction of knowing that he has certain glori- ous opportunities which it would be impossible for them to take advantage of in their respective fields. Landscape design as an art is less artificial than any other form of design because it deals almost entirely with natural objects in formal or infor- mal combinations. The landscape-designer uses trees and shrubs instead of spots of paint. He uses the real sky instead of an artificial represen- tation of one, and his hills and ravines should ap- pear as the results of natural forces rather than as man's creation. In every form of design, structure, as a fulfil- ment of conditions, is of paramount importance. This structure may be the rocky framework of the landscape or the skeleton of a building. The re- 28 LANDSCAPE GABDENING mainder of the problem, the esthetic treatment of this structural part, is a question of means to an end. No matter how much or how little enrich- ment appears, it must always recognize the func- tion of the parts upon which it is built. Landscape design in the abstract may be termed a problem in the composition of areas. Areas have only two dimensions, length and breadth ; but for the final consideration of the design scheme the designer must constantly keep in mind the three dimensions, length, breadth, and depth. This is because the design is to be viewed from dif- ferent points. In drawings and sketches, how- ever, only two of these dimensions can be treated at one time. The plan and elevation must con- stantly be correlated in order to produce a satis- factory result, and different elevations should be drawn from the same plan. The failure to observe this principle carefully is one of the great weaknesses of French archi- tecture. A fine enthusiasm for beautiful geo- metrical design often permits the plan to become an abstraction, beautiful in appearance rather than in function, and from many aspects the ele- vations frequently appear weak. A building FIGURE 4. TWO DIFFERENT ELEVATIONS OF THE SAME PLAN 30 LANDSCAPE GARDENING planned in such fashion is designed to be seen from only one or two stated positions. The landscape-designer must prepare his work with much greater conscientiousness, since it will be seen from a variety of positions. If elevations are drawn from several different aspects, and all " compose" well, — that is to say, seem to have the proper space relations, — a satisfactory design in three dimensions is assured. This is Rodin's method of working in sculpture. He models en- tirely for the silhouette of his figure from all pos- sible positions. This accounts in a measure for his magnificent results. As may easily be seen in a photograph, all masses of three dimensions appear to the eye, or rather pictorially, as areas possessing only two di- mensions. One actually beholds only width and height, for the impression of depth is an illusion. Landscape design may safely be defined as the satisfactory and consequently beautiful composi- tion of natural areas — shapes of earth, trees, and sky — in three dimensions. As used in this book, the term composition means the " putting together" of certain various elements in such a way as to produce an appear- ance of unity and harmony. It is the assimilation DESIGN 31 of all the different parts of a problem and their amalgamation into one underlying design idea. Every design should bear the stamp of man's handiwork, and yet the trees, shrubs, walls, roads, and other features should not appear to be " pressed into service." Any element in the de- sign that is not perfectly assimilated and harmon- ized with the surrounding parts in accordance with the basic idea is not composed to the best ad- vantage. It is a matter of frequent occurrence that the client may wish to introduce elements quite for- eign to the spirit of the designer's scheme, and these elements, though they may be either archi- tectural or horticultural, will often seem hardly possible of assimilation. It is then a question of omitting such elements altogether or of ruin- ing an otherwise satisfactory scheme. In case the element under consideration seems worth all the rest of the scheme, it necessitates the re-design- ing of the problem so that everything will har- monize, and the client's pet ideas will have an ap- propriate setting. This has often been done where some accessory, such as a statue, a well- head, or a fountain required " naturalizing"; that is, the designing of a favorable location so as to 32 LANDSCAPE GARDENING FIGURE 5. FOUNTAIN FROM THE BOBOLI GARDENS, FLORENCE, ITALY make it seem in harmony with the surround- ings. This is illustrated in Figures 5 and 6. It is assumed that the f ountainhead, which is one of the features of the big basin in the Boboli Gardens, has been transported to another locality, and is to DESIGN 33 be used as the principal accent in a fair-sized gar- den. Two solutions of this problem are shown in Figure 6, the position of the fountain being in- dicated by a spot of black. Certain garden accessories demand favorable FIGURE GA. SCHEME FOR THE " NATURALIZATION " OF THE FOUNTAIN FROM THE BOBOLI GARDENS (FIGURE 5) 34 LANDSCAPE GAKDENING location from their very nature. A sun-dial, to be of any service, must be placed in an open space, or it will not receive the rays of the sun. A statue, on the other hand, looks rather pitiable when ex- posed to the noonday glare, with no shade at hand. Any delicacy of detail is lost in a statue placed in an exposed position, as the reflection of the sun from its smooth surface is too dazzling to permit careful appreciation. The naturalization of a feature may be carried to absurd extremes. For instance, an Italian well-head might be introduced into Norman-Eng- lish surroundings. If the landscape-designer felt that the nationality of the well-head should be car- ried rigidly throughout the scheme, the result would be an Italian design which could not fail to be in discord with the dwellings for which the gar- den was intended. The well-head might, how- ever, be considered as an exotic accent only, and in that case could be harmonized merely by colors and shapes. That would seem to be the only sen- sible solution. The same principles of composition obtain in landscape that hold true of every other art : each part must be subordinate to the whole ; every part of a design must articulate with every other part, FIGURE GB. ANOTHER SCHEME FOR THE " NATURALIZATION OF THE FOUNTAIN FROM THE BOBOLI GARDENS (FIGURE 5) 36 LANDSCAPE GARDENING serving to enhance the entire scheme rather than insisting upon its own importance. The disposition of areas in landscape falls, broadly speaking, into two large classes, known technically as the formal and the informal ar- rangements. In each case the handling of the areas is distinctive. The points of primary con- sideration are the same, whichever type of design is to be employed ; but the style chosen determines the method of approach, which differs markedly in the two classes. Informal design may be called a study of space relations, and formal design a study of lines. No one can listen to a conversation about land- scape design, even for a very few minutes, without hearing the "formal and the informal schools" mentioned, probably with no slight degree of bit- terness on one side or the other. It is the survival of an ancient feud between those who claim that every planting scheme should seem to be the work of nature herself, without suggestion or interfer- ence from man, and those who are equally positive in asserting that every piece of planting should bear the impress of the designer, nature being quite evidently subordinated to his will. Those who really understand informal planting Photograph by The G.i FIGURE 7. PLANTING TO BREAK THE LINE OF TRANSITION BETWEEN A BUILDING AND ITS SURROUNDINGS DESIGN 39 have no quarrel with, the formalists, if only they will admit the usefulness of the informal school. It is the sentimental "landscaper" who has slid over the surface of things who alone is bold enough to state that nature will take care of her- self in a harmonious fashion about the artificial habitations of man, though unrestricted in any way. It must be a very crabbed and perverse formalist who will not acknowledge the beauties of informal design, and it must be an equally narrow-minded informalist who will admit no good in the opposite school. At any rate, the extremists run the best chance of being misunder- stood. The conditions governing a problem, such as location, use, extent, topography, and other exist- ing natural surroundings, the style of architec- ture, present or proposed, and the taste of the client, will determine the style to be employed. In most cases it is very desirable to use native material in planting rather than to go far afield, though the fact that a specimen is indigenous to a locality is not sufficient in itself to warrant its use in a planting scheme. Its shape, color, or habits of life may unfit it for use in the particular type of problem in hand. The golden elder, Sambucus 40 LANDSCAPE GARDENING Canadensis aurea (Fig. 34), which, it is said, was first found growing native, would not harmonize with a typical native planting scheme in any case, but could be made to harmonize with a more gar- denesque-like treatment. Sumac, with its irregu- lar branches, brilliant coloring, and general in- formal appearance, would not do at all for city planting. In the city home the selection of trees and shrubs is not controlled by natural features, such as existing plant material and contours, for city conditions are artificial, and a naturalistic treat- ment would serve only to accentuate the artificial- ity. Evergreens, provided they can withstand smoke conditions, may here be used to advantage, considering them as units of a whole mass rather than as a natural part of their surroundings. They seem to have an inherent stiffness which fits them for artificial conditions. Trees and shrubs in city planting are useful only | for contrast of form and color. Woodland condi- tions would seem as much out of place in stiff city surroundings as would a collection of topiary work and hybrid roses under natural forest condi- tions, because its very nature would lead one to question its appearance among such uncongenial DESIGN 41 surroundings. One would wonder, despite him- self, just how much per foot the land was worth which had been devoted to the growing of lawn grass, and this would interfere with a sense of en- joyment. The informality of appearance of a lawn of any extent among piles of stone and brick, city traffic, smoke and noises, would create some- what the same impression as white flannels at a formal evening party. On account of the different conditions which prevail, a specialized plant may be used to advan- tage in the city, while its type is more suitable for the country, because its hint of artificiality will more readily harmonize with the surroundings. Nevertheless, only such trees and shrubs as will withstand smoke conditions can be used in civic planting schemes. The surroundings of all dwellings should par- take at least in some measure of the artificiality of the architectural features, for this tends toward unity. The line of division between the turf and the buildings is always harsh, and something should be done to soften the transition and make it more gradual. This can be accomplished by the use of vines, which will climb over the sides of the house, or by grouping shrubs about the founda- 42 LANDSCAPE GARDENING tion. In this way the house will seem to be more closely welded to its setting (Fig. 7). / It is remarkable to note how few people have grasped this very simple principle. In many of our cities, particularly in the Middle West, it would seem as if the owners had scraped away from the building all planting possible, and de- posited it at a safe distance, for as a rule none of the plant material seems to bear any relation to the building itself. (See Fig. 39.) The architect can often help in making a build- ing suitable for planting. For instance, in ar- chitectural gardens a simple wall treatment will be more in keeping with the composition of large areas than a more complex handling of the archi- tectural surfaces. But where the planting is re- stricted to a few varieties and is elaborated only by a careful selection of accent plants, the wall surface may be designed so as to attract more at- tention than in the preceding instance; for this may be done without danger of competition be- tween plant and architectural features. If a complex and conventional treatment is im- posed by surroundings, it may be more readily ex- pressed when formal planting lines are the ruling factor. Planting and architecture, when used to- DESIGN 43 gether, are interdependent, and must possess sim- ilar characteristics. Walls emphasize the architectural features, and in planting a walled garden care should be taken that the plants are not out of scale with the gar- den by being too large or too small. On account of the dominance of the walled inclosure, it is not necessary to insist too strongly upon repetition in the planting; consequently plants used in a gar- den scheme of this type may be more gardenesque and highly specialized, both as regards the filler and accent shrubs (see planting chapter). Con- trast, always an element of interest, is gained by this arrangement. The use of walls, gates, stairways, balustrades, and other constructive and decorative features concerns the landscape-designer as much as the architect, and he has every right to use them as freely as plant material wherever the occasion warrants. He may use a wall instead of a hedge, or substitute steps for a grade wherever the formality of architectural surroundings seems to demand. While the major emphasis is here laid upon plant material, it is not intended in the least to minimize the importance of architectural feat- ures in landscape work. 44 LANDSCAPE GAKDENING Naturalistic planting does not necessarily imply the use of the informal style, nor does formal planting necessitate topiary work and parterre bedding. In many cases, such as Thomas Circle in Washington, D. C., bedding plants are used to their best advantage amid formal surroundings. In fact, conditions like these are best for the use of bedding plants, inasmuch as they will withstand city conditions, and on account of their formality and very evident subordination to lines and forms, they possess the requisite stiffness and precision. Most people, when seeing a bit of greenery, think only of the interest of the plant itself, whether it be worthy or not. The idea of some- thing growing finds a ready response anywhere, and consequently naturalistic planting within city limits would detract from the building or monu- ment wit^i which it was associated. Any very evi- dent grouping and clipping of bedding plants to produce a certain definite effect leaves no doubt in the mind of the beholder as to just what the effect was which the designer wished to produce, irre- spective of the success of his design. While, theoretically, the trained landscape-de- signer should have an absolutely free hand, and should know which scheme of all others would be DESIGN 45 best suited to Ms problem, the tastes of his client must nevertheless be taken into consideration to a greater or less extent. Here the determining factor will be the balance struck between the tact- fulness of the designer and the obstinacy of the client. <^4-~ Every design scheme has natural limitations wrhich clip the wings of imagination, and the tastes of a client who has little or no education along esthetic lines is a limitation second to none. More- over, the difficulty will be increased by the fact that people who have little esthetic development are seldom aware of this lack. If the designer is able, by broad training and experience, to produce in such circumstances a result that will please a comparatively uneducated taste, and yet appeal as beautiful to those who understand the subject, it should be a source of greater satisfaction to him than if he had had a free hand, and no limitations with which to cope. A designer who conceives a scheme without consulting his client's tastes and wishes will meet with occasional disappointments, and he certainly deserves to do so. All types of design deal first with the total area of the problem as a boundary line. In the formal type this area is to be cut up and divided into 46 LANDSCAPE GABDENING smaller areas by means of lines. In this connec- tion, walls, hedges, walks, or bedding (Fig. 8) are considered as line-divisions. The line is there- fore the dominant factor in the disposition of the areas in the formal type, and attention is paid rather to the arrangement of the material em- ployed than to the character of the material itself. Accordingly the areas in formal design are close, compact, and severe, and the planting is re- strained (Fig. 9). The idea is to create certain shapes which shall serve the purposes of practica- bility and beauty, but the internal composition of these masses is a matter of decidedly secondary importance. It is a design of form rather than of color, and the individual interests of plants are not considered of much moment. A greater freedom characterizes informal de- sign both in its arrangement and in the class of the material used. Line, the outlines of areas, is here considered as subordinate to the mass or area it- self, and is studied only after the areas have been placed in proper relationships. The large areas, whether considered as planting masses or as open lawn, may be moved about freely so as to appear to the best advantage within the limits of the prop- erty before the character of their own boundaries 48 LANDSCAPE GAEDENING as lines is determined upon (Fig. 10). Of course this is all done in rough preliminary sketches, only sufficiently accurate to convey the idea. This does not mean that there should be a care- less and unstudied use of line in informal de- sign. On the contrary, it is often more difficult to design satisfactory lines of this type. Free- dom in appearance is not always the result of spontaneity. r Briefly, the major differences may be thus ) summed up: in the informal school line is deter- mined by the mass, and in the formal school it is the mass which is determined by the line. The Japanese school of landscape is often dif- ferentiated from the formal and informal types. It will be found, nevertheless, upon analysis, to be merely a strictly informal type used upon such a small scale as to give the appearance of formal- ity. It is a design of irregularity, but very highly conventionalized (Fig. 11). The popular opinion of a Japanese garden seems to imply the presence of a stone lantern or two, a few irises, a straggly wisteria, and enough water to " explain" the presence of an unstable bridge; also the idea seems to prevail that these need not be at all in harmony with their surround- DESIGN 51 ings. Now, the Japanese garden proper is a very beautiful and carefully constructed thing, the re- sult of years of traditions and Oriental conven- tions of life, which cannot at once be grasped by the Westerner, but will richly repay a careful study. Most of the Japanese gardens found in this part of the world are treated f addishly, as stage prop- erty or pieces of scenery, and consequently they cannot be considered as the outgrowth of condi- tions. In fact, some essentially Japanese detail is often introduced into an entirely foreign scheme — an Italian garden for instance — in such a way as to spoil both the intrinsic beauty of the detail and the whole garden scheme as well. If a carefully designed Japanese garden is se- cluded, and so placed as to be seen by itself alone, as it would be under native conditions, it can be used anywhere for its individual interest and pic- turesqueness. It cannot, however, be used as a part of an ordinary garden scheme with any de- gree of satisfaction. In both the formal and the informal types there must be soTngj^oTninant. design idea with which the rest of the scheme must be harmonized, and this is true of all design, as has already been insisted FIGURE 10. INFORMAL PLANTING PLANS DESIGN 53 upon. This is the principle of unity, the subordi- nation of all parts to the main scheme. In the formal type of planting, architectural lines will probably be emphasized, while the in- formal type will lay greater stress upon the horti- cultural features. In the garden at Wilton House, for example, the architecture is quite the dominating note, the plants being used simply as spots of color for dec- orative purposes and not for any intrinsic inter- est. The very formal architectural terrace de- pends for its adornment upon statues and vases, and descends to a formal inclosure, which is walled, and accented in like fashion with vases and statuary. A naturalistic tree bank in the back- ground renders the accent of the dividing-wall very marked. If the treatment within the wall were as naturalistic as is the exterior planting, the wall would seem entirely useless and out of place. Any planting within the inclosure must appear as restrained and severe as the inclosing wall, or it will not be in keeping with the whole. Con- versely, if the formal planting stopped short at a naturalistic tree mass without any defining wall, there would be a shock. But the problem is well handled. The space is divided geometrically by 54 LANDSCAPE GARDENING walks, with sharply accentuated edges, and no matter how brilliant the colors within the planting areas, all shapes have been subordinated to archi- tectural lines, and no plant is used for its indi- vidual interest. This is an excellent example of restrained planting. In the informal Sargent planting at Holm Lea, Brookline, Massachusetts (Fig. 12), it will be seen that Mr. Sargent's interest as a botanist has led him to group the rhododendrons about the pool in such a way as to focus the attention upon them, and their reflection in the water serves to enhance their charm by doubling the effect of the color mass. Here, of course, the accent is horticul- tural. The special characteristic of the rhodo- dendrons is their bright blossom masses contrasted with the dark, shining texture of their evergreen foliage. This is admirably brought out by their setting in the planting scheme. (See Frontis- piece.) When accent is required in a horticultural way, it is frequently attained by the use of a plant the distinguishing characteristic of which is quite noticeably different from those of the plants which form its setting. Horticultural accent is secured by selecting a plant the characteristic of DESIGN 57 which will appear to the best advantage under the conditions imposed by the problem in hand. The necessary accent may accordingly be secured by change in the scale, form, texture, color (leaf, twig, or blossom) where mass planting is con- cerned, and by more elusive qualities, such as in- dividual leaf shapes and twig forms, where the plant is isolated. In massed planting the accent must be strong. If the prevailing lines of a shrubbery mass are low and rounded, the intro- duction of a Lombardy poplar or two will give accent by change of scale and form as well. A catalpa will give accent not only by the coarse texture of its foliage, but by the large masses of white blossoms in early summer and the still more interesting pods in the autumn. Both the texture and the color of the purple beech recommend its use as an accent plant. On account of brilliant autumn coloring, its distinguishing characteristic, the tupelo-tree is often planted with hemlocks, to make the most of their contrast. Many other ex- amples might be given of similar planting prac- tices. A thorough knowledge of the plants at one's disposal, and their characteristics, will be indis- pensable in suggesting means of accent to the de- 58 LANDSCAPE GAKDENING signer when he is considering horticultural ac- cents. As a rule, the nature of the accent is first considered in the abstract For instance, a scheme might require an accent plant which should be tall, slender, and of rough texture, with a general red tone. So much decided upon, it is then a question of choosing from the plant mate- rials at one's disposal the variety which will come nearest to satisfying those requirements. Since the use of line differs markedly in the two schools, it results that in the formal style any change of line, however slight, will immediately affect the areas in their integral relations. Every walk and plat or parterre is bounded by a defi- nite, hard dividing-line, and those lines are the constructive framework of the design, because they are always placed with definite relation to axes. As the entire design may be seen at a glance in formal work, it follows that the mere altering of the width of a walk will change the proportions of the bordering area, and the divisional propor- tions will hence assume an entirely different ap- pearance. Consequently, where an example of the formal type has been successfully carried out, it should appear so complete and exact as not to DESIGN 61 permit of any change in the shape of the planting areas or the width of the walks. In the informal type considerable changes of outline may be made without materially altering the general appearance. In Figure 13 the ar- rangement of units is entirely dissimilar, and yet the appearance in elevation would not vary much. The charm of informal planting is closely bound up in the silhouette of its elevation from all different points of view; therefore the outline of the plan of the planting masses seldom attracts much attention. Accordingly the width of plant- ing areas in informal design may often be consid- erably changed, when necessary, without affecting the general scale. The irregular boundaries of informal shrubbery masses may easily be altered even to the extent of moving them several feet to give greater freedom of approach, or for some other utilitarian pur- pose, without causing any marked change of ap- pearance in the masses themselves. The formal type, where the whole garden scheme is perceived at a glance, is successful or not chiefly on account of its plan, but the strength of the informal type lies largely in elevation. Since the final result of every design must be a DESIGN 63 balance, the whole process of designing is toward this end. The balance is either very regular and striking — understood at a glance, as in a geomet- rical figure — or it may be more a matter of grad- ual appreciation, as in a Japanese print. These two types of balance, the obvious or sym- metrical, and the occult or unsymmetrical, are illustrated respectively by the formal and in- formal schools (Fig. 14), and the balances are perceptible both in plan and elevation. Formal arrangements are generally geometrical, simple and symmetrical, so far as the structural lines are concerned, while the informal are more complex, irregular, and seldom in the least symmetrical. Formal arrangements are generally in pairs, — that is, are bilaterally symmetrical,— while no ex- act similarity will appear in an informal one. The general primness imposed by geometrical figures is exactly in keeping with the spirit of a formal garden, but is quite at variance with an in- formal scheme, the charm of which lies often in a sort of waywardness. It must be remembered that informal design depends upon details and is generally seen in parts ; it may consequently consist of a number of more or less independent balances which should of 64 LANDSCAPE GARDENING course appear complete, though none of them will be symmetrical. The formal scheme, presenting one large and very obvious balance, may be seen in its entirety at a glance. All design is based upon repetition, and all de- sign is consequently similar in so far as its appear- ance is affected by the laws of repetition. The diversity of the materials employed to express the laws of repetition in different forms of design is that which confuses the beginner. The laws of repetition may be divided into three principal parts: sequence or simple repetition, rhythm, and balance. A design should first of all possess unity ; that is to say, it should "hang together," and not appear as a jumble of separate parts. This necessitates at the outset a certain amount of repetition, and in consequence it is necessary that some one ele- ment be common to all parts of the design. Of course, if too many elements are possessed in com- mon, there will be no variety, and the result will be perfectly monotonous. Repetition applies to the forms, sizes, colors,, and positions of all materials used (Fig. 15). ^ It is not necessary that plant materials should be alike in all respects, but only that more of their FIGURE 14. 1NFOBMAL AND FORMAL BALANCES 66 LANDSCAPE GABDENING characteristics should be alike than not, in order to secure conditions of sufficient monotony to pro- duce an appearance of quiet and rest. When architectural features are used as gar- den accessories, or to fulfil some similar function, it is not necessary, or indeed really desirable, that all be exactly alike. The general masses should be the same, but the details may differ considerably. The large shapes, by their similarity of appear- ance, will insure the unity of the design, while the different fancies indulged in their details will claim the attention and give a charm of variety in such fashion that the element of variety will not con- flict with the main idea. On both sides of some of the long leafy avenues of Versailles statues occur at regular intervals for considerable distances, serving to act as ac- cents, and to emphasize the idea of distance by calling attention to the perspective. The statues tell as light masses against a dark background from a slight distance, but on closer examination all are found to be different, each attracting by its individual charm. If the balance achieved in a design is the result of monotonous repetitions only, it will be a sort of lifeless thing, a static equilibrium. If rhythm is DESIGN 67 introduced, however, a dynamic equilibrium will result, giving to the design a new vitality. Rhythm is the^enliyening,quality in design, and embodies the idea of change or progression; it is usually produced by changes of sufficient regular- ity to lead the eye in one direction or the other, re- fusing to let it come to a full stop. A perfect example of rhythm in nature is the rolling surface of the ocean, with all its waves re- curring at regular intervals, but nevertheless carrying the eye in one direction with a powerful sense of motion. If one looks down a long avenue of trees of regular height, the diminishing per- spective creates a powerful pull upon the atten- tion, and the gaze is focused at the distant point where they seem to meet. A rhythmic setting of this sort is used for special features on a larger scale, for it is a well-established custom to place an imposing structure at the end of a regular vista. Carpeau's fountain (Fig. 16) is at the front of a vista, and yet the enframing trees set it off erfully in the same fashion. The rlr case is due entirely to perspective. Ehythmic quality may appear in lines, in the shapes of areas, or in colors. It may be a recur- FIGURE 15. REPETITION OF SIMILAR TREE FORMS, HILL-TOP, FIESOLE, ITALY DESIGN 69 rence of accents which must differ sufficiently to express development, or it may be an undulating line like a river-bank, which compels the attention to follow it. The gro\vth of plants is always rhythmic; the boundary of an informal walk should be. The word rhythm has been used in so many different ways that it has a number of loose connotations, but for the purpose of landscape design, as treated in this book, rhythm will mean the regular recur- rence of an accent of some sort, which entails the idea of change. Eepetition — sequence, rhythm, and balance — is the foundation of design. In solving a practical landscape problem, repe- tition is not taken into consideration until its ap- pearances are to be determined, and this cannot be done until the economic side of the question is set- tled. First will come the arrangement of all the parts for the greatest practicability, and this is fixed in designing the. plan. The study of this plan means the arrangement >of all its elements in such a way as to obtain the maximum of practical and esthetic fitness. It is the plan which deter- mines finally the position of all the members of the design. The first thing to decide will be position of 70 LANDSCAPE GABDENISfG buildings and architectural features, both in rela- tion to each other and to the surrounding land- scape. In studying the positions of the architec- ture, pleasing views must be taken advantage of, and objectionable ones eliminated as far as possi- ble. One does not care to gaze from his library window upon a populous and curious chicken- yard, nor yet upon a collection of service build- ings, no matter how neatly they may be kept. A railroad, newly made land, or slatternly neighbors may require " screening," for one should, wher- ever possible, look out upon pleasant surround- ings. This is called the design of the " off -scape," and is of the utmost importance. Medieval castles, wherever possible, were built upon rocky peaks, as much for ease of defense as to allow their owners a wide survey of the sur- rounding country, in order to recognize the ap- proach of danger at some distance. Although they commanded a remarkable view, it is quite probable that it had no esthetic appeal to the "rob- ber barons." Defensibility in the Italian hillside gardens was no object, but the view was, and the garden was consequently placed in a commanding position. The result, so far as location is concerned, is the DESIGN 71 same in both cases, although the determining fac- tors were practicability on the one hand, and pleas- ure purposes on the other. After some idea of the general requirements of the problem in hand has been gained and the build- ings have been located, the next important step is the placing of the principal areas, — the kitchen- gardens, service-courts, stable-yards, and so on, in regard to their greatest usefulness and availabil- ity. The position of these larger units will then determine the placing of the smaller masses that are generally of greater esthetic interest, and are intended to bear close scrutiny. The next consideration is the circulation; that is, the disposition of walks, drives, and ap- proaches. The careful placing of these is most es- sential, as they determine the points of view from which the design is to be visible, and esthetically are consequently of the utmost importance. If they are not likewise laid out in a practical fash- ion,— that is to say, so as to facilitate progress and to segregate traffic of a utilitarian nature, — paths will be worn over grass plots in a manner most dis- turbing to the designer, though he should really accept the situation meekly as a well-merited re- buke. 72 LANDSCAPE GAKDENING The basis of the design scheme in every piece of landscape work is geometrical, whether symmet- rical or not, and the first consideration in design- ing the circulation is the handling of the traffic in the most convenient way. Once laid out, the lines of traffic determine the disposition of the planting masses and open areas, and have therefore a dou- ble significance. Particularly is this true of for- mal design, because the interdependence of cir- culation and planting is very evident in this type of work; a formal design looks either right or wrong at first glance. Informal divisions allow much more latitude than the formal because experience has shown that the number of satisfactory ways in which rectan- gles may be formally divided is few. Although curved lines are sometimes employed in the formal style, straight lines are characteristic, and the an- gles are generally 90°. , In the accompanying illustrations, rectangles are shown in formal and informal divisions. In Figure 17 the square is divided symmetric- ally. Numbers one and three show ways of di- viding by simple lines, and number two is a com- bination of the motives found in one and three. It will be noticed that all the lines are parallel FIGURE 16. CARPEAll's FOUNTAIN, LUXEMBOURG GARDENS, PARIS DESIGN 75 with the sides of the square. These lines may also be parallel with the diagonals, which gives a cer- tain amount of variety, although the scheme is virtually the same, and sometimes both may be found in combination where the scheme is large (see Fig. 8). The methods of division shown in Figure 17 seem to be the only satisfactory ones for the formal subdivision of squares. Where oblongs are divided parallel with their sides, the line of division across the short dimen- sion does not often occur in the middle. This is seen in numbers four and six. Number four is a scheme frequently employed where a feature is introduced at the intersection of the axes. A spectator who is on the greater division of the long axis, in looking toward the cross axis, is likely to think that the cross axis bisects the plot, and thus an appearance of greater distance is imagined. Where the area thus divided is restricted, the de- vice is often very useful. Another frequent method of division is based upon two cross-axes, as in number six. Other subdivisions such as those in numbers seven, eight, and nine are applications of numbers two and three. Subdivisions by geometrical lines are very simple in the formal style, but all sorts of elabora- THE GEOMETRICAL WU OF THE PLAN IN LANgfCAPt DE/IGN 1 .2 3 A J< 5 If & 7 RECTANGL^ a 9 KLCTANGLE/ FIGURE 17. THE GEOMETRICAL, BASIS OF THE PLAN IN FORMAL DESIGN DESIGN 77 tion within the main divisions may be made by parterre bedding. The subdivisions of rectangular plots in the in- formal style (Fig. 18) is a much more difficult task, and one which has not been crystallized into definite form. Every division is made solely on its own merits, considering it in relation to its sur- roundings. The points of entrance to such a plot are located and numbered according to their rela- tive importance, which depends upon the number of people that uses them, and the frequency with which they are used. If there are two points be- tween which the greatest amount of passing will occur, the path or drive between them should be fairly direct, in order to save time and annoyance. In Figure A the three entrances marked 1 are of equal importance, but there is another entrance (2) which is occasionally used. The comparative infrequency of use of 2 does not warrant a path directly across to 1 on the opposite side, although it does necessitate a curving of the path between the other two points in order to allow easy access to the exits on each side. In Figure B there are several entrances, with three degrees of importance. It is necessary for the paths to connect the most important entrances 78 LANDSCAPE GAEDENING (1) without much deviation. This brings the cir- culation near to points 2 and 3, which may be con- nected without much trouble. Point 4 is not im- portant enough to warrant the deflection of the path between points 1, and consequently it has been given a separate communication. The same principles have been followed in the laying out of Figure C. A garden may be so designed as to become a part of the household for use as a sort of outdoor room (Figs. 9 and 53). A room of any description must be more or less formal in its bounding lines, and if too great a change is experienced in passing from the house to the garden, there will be no feel- ing of unity. Consequently a garden of this sort is bound to bear the stamp of the formal type. If the garden is considered by itself as one of a num- ber of areas, however, it may be informal, but its type will none the less surely be decided by the limiting conditions of the problem. After the circulation is settled, comes the loca- tion of the utilitarian and esthetic planting, and the question of position and extent. The utilita- rian planting is placed where it will achieve its greatest economic usefulness, and the esthetic where it will give the greatest amount of pleasure ; THE GEOMETRICAL J OF THE PLAN IN A / K-^A / x Vx *^V / / \\ VM FIGURE 18. THE GEOMETRICAL BASIS OF THE PLAN IN INFORMAL DESIGN 80 LANDSCAPE GARDENING but one must continually bear in mind the over- lapping of these two features, and judge every so- lution from both points of view. Planting de- pends directly upon the circulation, because it directs the gaze of those who use the walks and drives in directions chosen by the designer, and screens service roads that might present objec- tionable features. It will be seen that the composition of the plant- ing masses is nothing more nor less than the thoughtful and satisfactory location of areas. Balance, rhythm, and repetition enter here as dominant factors in the design, when it is first con- sidered in the abstract. The axes in all design are very important, al- though so far as general appearances are con- cerned, they do not figure as prominently in the informal design as the formal. An axis is a geometrical line — the major struc- tural line of a design — about which, and in rela- tion to which, all the parts are arranged. There are primary and secondary axes. The primary axis is the one of greatest importance, and the secondary axes, of which there are several, are ar- ranged in harmonious relations with it. When an " existing axis" is spoken of, the meaning is DESIGN 81 that all the elements of the subject under consid- eration are arranged in such a manner as to make clearly evident the dominance of the axial line and its position. Axes may exist on account of conditions or they may be created. In the most ordinary form of landscape design the axis of a view from a window or doorway is chosen as the major structural axis of the design, and this is emphasized by planting. Existing axes — that is, axes that are at once ap- parent— may be divided into two classes, that which is perceived from the inside of the house, and that which is perceived from the outside. Focus along axial lines in the first case is brought about by the enframement of a window, a door, or a terrace; and some object of interest, usually called a " fea- ture," is generally placed on the axis to insure stability and emphasis. In looking from a win- dow at an informal scheme, however naturalistic the planting may be, there is frequently either a sun-dial, or some other architectural or sculptural feature, set directly on the axis. It serves to at- tract the gaze, and unconsciously satisfies the mind in regard to the underlying structural lines. Where the axis is perceived from the outside, it is usually made to coincide with the axis of a view or 82 LANDSCAPE GAKDENING a vista of some sort which focuses upon a distant valley and mountain, a river or a village. In designing the planting for a scheme, existing axes must always be taken into consideration, and where axes are to be created, not having existed be- fore, they are the first things to be decided upon in determining the proportions of the design. ^Cx&i ated axes are almost always found in formal planting, particularly in the formal garden, where their position is frequently emphasized by the parallel direction of walks or drives. Sometimes they will cross at right angles. Since the axis is considered the backbone of the design scheme, it would seem very strange to have a main drive, un- less there were one on each side, run parallel with it rather than along it, for this would destroy, in the eye of the spectator, the idea of symmetry, al- ways an essential in formal design. The material used will probably be grouped ac- cording to the above study of axes, directing the eye toward some distant object of interest. Very often, however, a fountain, a statue, or a building is placed at the intersection of major and minor axes. In fact, anything the individual interest of which is sufficient to repay the attention may be used here as an accent. DESIGN 83 In a much less symmetrical way in informal de- sign plant material is used to enframe views which determine axes ; for informal axes, as has recently been pointed out, are generally determined by views from within or without the house, as the case may be. Plant material is sometimes used on an axis where some one definite point is to be accen- tuated, but accent material is always employed for this purpose. In formal design the positions of the axes determine the positions of all walks and the placing of all garden accessories. Every problem, when finished, should have posi- tive qualities, a certain character of its own. There should be no doubt in the mind of the spec- tator as to what the desired effect is, and it should be perceived directly. It must not, of course, as- sault the intelligence of the beholder and clamor for attention, but should nevertheless tell its story and accomplish its purpose in a straightforward fashion. Sir Joshua Reynolds had something to say in connection with painting that will apply with equal force to landscape : The great end of the art is to strike the imagination. The painter therefore is to make no ostentation of the means by which this is done; the spectator is only to feel the result in 84 LANDSCAPE GARDENING his bosom. An inferior artist is unwilling that any part of his industry should be lost upon the spectator. He takes as much pains to discover as the greater artist does to conceal the marks of his subordinate assiduity. In works of the lower kind, everything appears studied, and encumbered; it is all boastful art and open affectation. The ignorant often part from such pictures with wonder in their mouths, and indiffer- ence in their hearts. In a way, every landscape problem that comes up is a law unto itself, and yet all successful land- scape schemes have obeyed the general laws of de- sign. The most essential things to bear in mind are, first^ the fitness of the design for its function,, the subordination of all details to the general idea, and finally a careful working out of these details in such a way as to enhance the first favorable im- pression which has been gained without close scrutiny. Whatever the problem in hand, and whatever the medium employed, the primary requisite of good design is fitness for the function which it is to perform. Ill COLOR ALL objects perceived by man, whether natural or artificial, are visible because of their color, and because of that alone. A thing is visible because it is darker or lighter than something beside or behind it or is of a different hue, and the shape of its color mass gives the idea of form. This form is often expressed by means of a line drawn with pencil, pen, or brush, though there is nothing in nature which really warrants the use of such a'% line, as everything is perceptible by masses, and these masses consist of varying amounts of differ- ent colors. The long-established conventions of drawing have enabled us to perceive the idea of objects when their outlines alone are represented, and this abstraction has given rise to what is termed " line-drawing," or drawing in outline. The imagination of the spectator, relying upon memory, fills in these outlines with the proper col- ors, and thus the drawing indicates reality. These outlines, however, are in themselves abstractions, 85 86 LANDSCAPE GARDENING and like nothing else in nature. In drawing pro- cesses, then, it is the color shape that is indicated by the drawn lines. One element of color, dark and light, is perhaps most important in the perception of objects, and this darkness and lightness is known as value. At night one does not perceive objects readily because the absence of light has minimized value contrasts, making the objects appear uniform in color, and where color differences are not per- ceived, individuality is lost. On a moonlight night the principal perceptions are of " values," — that is, lights and darks, — with other slightly dif- fering color qualities added. The shadows are all a sort of deep violet black, and the " high-lights" a greenish yellow. Forms are consequently seen only in their larger relationships where they are relieved by shadow, but in the shadow itself all detail is lost, because there is insufficient light to make color distinctions. Where the light conditions are such as to make colors easily perceptible, the color viewed ab- stractly is of more importance than the form, for it repels or attracts more readily than any other one element of design. Color is divided into three parts, value, hue, and COLOR 87 intensity, and into these parts any color may be finally analyzed.* Value, as has been said, is the lightness or darkness of a color, without taking into consideration the hue or intensity. The hue of a color is its individuality, — the qual- ity which gives it a name, such as red, blue, or FIGURE 19. DIAGRAM OP COMPLEMENTARY COLORS green. Hue differentiates colors of the same value and intensity. Its gradations may be very slight; for instance, a number of colors may be chosen any one of which would unhesitatingly be pronounced "blue," and yet upon comparison it will be seen that no two are alike. * Cf. "A Text-Book of Design," Kelley and Mowll, pp. 106 et seq. 88 LANDSCAPE GARDENING Color names, unfortunately, are loosely applied, and the painters call hues by names which mean nothing to the dry-goods dealer who is evolving new colors (in name at least) every year to satisfy the demands of his fair patrons for something new. The horticulturists use a still different terminology, and, sad to relate, are rather careless about it, too. On account of the all-pervasive looseness in color characterization, it has seemed best to keep the color names in this book as simple and definite as possible. Intensity is the brilliancy of a color, and its op- posite may be called neutrality. Imagine two blossoms of the same hue, such as blue, for instance. They are of the same value ; one is neither lighter nor darker than the other ; one is a bright blue and the other is a dull blue, which is merely another way of saying that the intensities are different. The brighter flower has the greater intensity. A bright color in unfavorable surroundings is much more offensive than a dull one; consequently it is safer to use brilliant colors sparingly, relying on colors of less intensity for the greater part of the scheme. If a high intensity is characteristic of a planting scheme, it will be difficult to secure an accent color unless it is one of the highly special- COLOR 89 ized horticultural varieties, such as the Japanese maples and varicolored shrubs. Among a number of brilliantly colored plants all clamoring for attention, an accent plant will have to be very powerful indeed in order to make its presence felt. Needless to say, a scheme of this sort is entirely out of place in everyday surround- ings. As a rule it is much more satisfactory to restrict the hues and intensities, using differing values for accent purposes, and leaving the color contrasts for unusual situations and effects. Colors may be divided into two classes, the pri- mary colors, red, yellow, and blue, from which all other colors are made, and the complementary colors, often called secondaries. Complementary colors are those which have nothing in common, — giving the greatest possible color contrasts. Every color has its complement in the color most unlike it. The complement of any primary color is a sec- ondary which is composed of equal visual amounts of the other two primaries. Conversely, every secondary color has as its complement the primary which does not enter into its composition. In the color cycle (Fig. 20) the complementary colors 90 LANDSCAPE GARDENING appear directly opposite one another. Red and yellow, mixed, give orange; yellow and blue, green ; blue and red, purple or violet. If complementary pigment colors are mixed in equal quantities, each kills or neutralizes the other, and the result is gray, in which neither of the complements is traceable. In fact, comple- mentary colors are so antagonistic that they will neutralize one another if used in anywhere near equal quantities. On the other hand, they may be used together to great advantage if a very small amount of one is present. In this case there is PHILADELPHU/ CORONARIU/ VULQW K* VIBUBNUM LONTCERA FIGURE 20. DIAGRAM OP SEASONAL COLOR CHANGES COLOE 91 no doubt as to which is the predominating color, and all its good qualities are set off to advantage by the presence of its complement, unlike it in every respect. Such arrangements are very stim- ulating. This stimulus is frequently taken advantage of in winter planting, where a background of dark evergreens is relieved and brightened by the bare red branches of the dogwood (Cornus siberius) or berry-bearing shrubs, such as the barberry, with its bright red clusters. It is the contrast of com- plementaries, present in unequal quantities, that gives so festive an appearance to holly. Color has certain well-established psychological phenomena: red is a powerful excitant; blue in large quantities, and especially violet, is depress- ing ; while the greens and browns are quieting and restful, probably because we perceive so many of them in nature. This is, of course, a broad gen- eralization, for it is quite possible to find a green that has a most disquieting influence and a red that is almost soothing ; but in the main the state- ment holds. Of course these effects are produced by the elimination of other colors, and, as de- scribed, will not often be noticeably present, but if these phenomena are kept in mind, they will be 92 LANDSCAPE GARDENING found very helpful in the production of color har- monies. The landscape-designer can take advan- tage of these facts in his planting, and lend a vi- vacious or sober aspect to his scheme when it is desirable. Many people have a predilection for one hue or another. One may fancy red particularly, and another may prefer purple. There are often in- herent color antipathies. When a person says, "I don't like blue," he means that that color, apart from its surroundings, is distasteful to him. But for design purposes a color cannot be considered apart from its surroundings. It must be recognized that no color in itself is necessarily disagreeable, but only in combination with other colors, and in consequence the questions of color combinations and harmonizations are of the utmost importance. The colors employed must either have sufficient of the complementary to bring out salient features — individualities of hue — or must be sufficiently alike to present one simple idea. Color appreciation is largely a matter of educa- tion, as is the enjoyment of music. Catchy songs and brilliant colors fall in the same class : both se- cure the attention with greatest ease, but do not COLOR 93 possess enough refinement to claim an educated taste for any length of time. All the elements of attractiveness are pushed at one, and nothing is left for later discovery and enjoyment. It is a well-known fact that the taste of people who become interested in pictures changes rapidly as their familiarity with and knowledge of them increases. It is the same with plants. The un- educated taste requires the nerve-shattering ac- cent of the round, red geranium bed in the middle of the front lawn; the more refined taste much prefers the simple expanse of green, with the color accents relegated to the border. Bar- baric colors may be cheerful, but they certainly cannot be termed restful. A painter of landscapes, one who designs them on canvas, has much greater freedom than does the landscape-designer, who depends for all his effects upon architectural and horticultural material. If the painter desires to change a color slightly, he mixes another color with it to produce the effect he wishes. That resource is not open to the land- scape-designer. He must search for another plant that has the required color characteristic in addition to other essential qualities, and there may be no such variety as he wishes. In that case he 94 LANDSCAPE GAKDENING must re-design his problem so as to use available material. He must know Ms materials so thor- ougly that he runs no danger of imagining a charming color scheme only to find that there are no plants that will give the desired result, or that such plants as have the required color will not grow under the prescribed conditions. Necessa- rily, then, the horticultural materials are more re- stricted than the painter's palette, and one realizes that the gardens of Watteau never grew or could grow as he painted them except in his imagina- tion. Painters often use a desired color note in a shadow when it is best that it be not too prominent, but even this is usually denied to the landscape- designer. His leaves and blossoms generally re- quire sunlight, and comparatively few species will grow in the shade. " A city that is set upon an hill cannot be hid." Just so will the color errors in the design be set forth in all their hideousness be- cause of the bright light upon them. The color problem of the landscape-designer is, then, the combining of his materials to the best advantage. His colors cannot be contrary to na- ture. They are made to his hand, unalterably fixed; he may choose or reject, but that is his only COLOR 95 latitude. Fortunately, there is an abundance of plant material which will grow in any temperate or tropical climate, so the natural limitations will not be any great drawback. Since no color can rightfully be termed ugly when considered by itself alone, how may one com- bine colors to the best advantage 1 The laws of repetition will apply here exactly as they did to form. Colors possessing a common element will har- monize. Yet here are also glorious possibilities for color clashes. If a costume contains three or four different kinds of red, it is sure to. be ugly. Nothing could be worse than a bed of geraniums of several different reds all fighting for suprem- acy. To be sure, they possess a common ele- ment, but it is too much in evidence. If of two reds of much the same value and intensity, one has a leaning toward blue, and the other a weakness for yellow, confusion is bound to result if they are used together. It is much the same as close har- mony in music : to many it seems discord. A very simple means of color analysis will prevent mis- takes of this kind. A color may usually be separated into two parts, its dominant note and its modifying note, the lat- 96 LANDSCAPE GARDENING ter its suggestion of some other color. A yellow green may be divided into a large amount of green and a lesser amount of yellow. Consider two groups of colors, one with the dominant note the same for all its members, but with the modifying notes different ; the other with different dominants, but possessing the same mod- ifier. As a rule the first group will clash while the second will harmonize. From this it may be de- duced that where color plays a large part, the dom- inant notes should possess variety, with enough of the modifier present to harmonize them and pull them together. This refers of course only to col- ors of high intensity, for the duller tones are sel- dom inharmonious in combination. This is be- cause they possess the common element of neutral- ity. In the design chapter it was said that the final result of every design scheme should be a balance. The balance applies to color as well as to form. This does not necessarily imply that the same color note must be repeated on opposite sides of the de- sign,— there is no chance for subtlety in such a treatment, — but it means that the color accents of whatever sort, though quite dissimilar, must form a balance. COLOR 97 Plant colors are seen in leaf, blossom, fruit, and twig or stem, and the predominance of any of these elements will determine the color value of the plant. To be sure, many plants are interesting in all these ways, but necessarily at different seasons of the year. Texture of the plant surfaces will have a considerable influence on the color value of a plant. The rhododendron leaf is attractive not only on account of its dark, warm green color, but also because of the glossy texture, which catches the light sharply, making brilliant high lights and shadows, and giving greater variety to the foliage color. The "dusty miller," because of its rough surface, and the common velvety mullein have a different color value on account of their texture, which catches the light so as to spread a "bloom" over the surface, and the result is that the natural colors, at a slight distance, are lessened in inten- sity and neutralized. Plants vary in color value as their distance from the observer increases, and in planning the color of a planting scheme it is well to bear in mind the position and distance from which the plants are to be viewed. Distance always tends to decrease value contrasts and to add blue to hues. Plants that, close to the observer, might appear 98 LANDSCAPE GARDENING too brilliant, serve well to emphasize a more dis- tant point, and conversely flowers of delicate hue must be closely viewed in order to produce any ef- fect. In the problem chapter (Fig. 42) will be seen a scheme of planting in which the di- mensions appear to have been increased by the use of bluer foliage hues as the planting recedes from the spectator. Green is, of course, the most common and sat- isfactory plant color, and it is of all gradations and varieties, from the silvery green of the poplar to the russet greens of the sedges, dark and light, intense and neutral. The other plant colors may be grouped under the primaries, red, yellow, and blue. Tinder the reds will come pink, which is only a light red, scarlet, crimson, and magenta; under the yellows, greenish yellow, lemon yellow, and orange yellow, as well as all the browns, which are really deep shades of orange and yellow. The blues vary from green-blue at one extreme to pur- ples and violets at the other. It will be a simple matter to group plant colorings approximately un- der these heads. Each of the seasons has its own peculiar range of colors, and therefore it should be easy, in look- COLOE 99 ing at a picture, to determine by the season colors the time at which it was planted. In the spring the greens of high value predomi- nate, with a strong leaning toward the yellow greens ; yellows ; light blues ; and white in the blos- soms. The summer is least interesting of all in color, for most of the greens have turned dark and dull, and there is little color accent; but wherever an accent occurs, it is probably stronger than spring color would be. In the autumn there is an immense variety of yellows, oranges, reds, and browns, all of which contrast beautifully with an evergreen back- ground. There is not much range of color in the winter. The evergreens are the strongest note of all, and some of the oaks retain their leaves till spring, while the other trees have only their twig coloring, varying from gray to brown as a rule. There are brilliant exceptions to this in the bright red and yellow dogwoods, and in all the berry-bearing shrubs, which now appear to good advantage, sil- houetting their clusters against the dark back- ground. A " year-round" garden should aim at a color 100 LANDSCAPE GARDENING interest that will never be lost, although it will progress through leaf, blossom, fruit, and twig, from one phase to another as the seasons change. The seasonal development of a shrub causes it to vary its color in a regular progression, moving its dominant color note through a sort of cycle of changes. Plants differing widely in spring foli- age approach a standard green in late summer, to become again diversified in the autumn. This may be called " color rotation." While plant color is largely green, this green will incline somewhat toward one of the primaries, so that, regardless of species, plants may be grouped under red, blue, yellow, and even purple greens. This modifying element of the plant green will appear most strongly at the beginning and the end of the plant's yearly growth, for dur- ing the summer season there is little variety in plant greens (Fig. 20). The Japanese barberry, for example, sends forth reddish buds, which grad- ually turn into the dark, dull green of high sum- mer; then it begins another change toward the brilliant red of its autumn foliage. There has been a progression or rotation from red through green and back to red again. The Viburnum lan- tana, or wayfaring tree, has a rotation from pur- COLOR pie back to purple, and the Forsythia runs the scale of yellow. There is a fourth class still which does not come into the same category, its autumn coloring being the complementary of the spring; but this group- ing by color rotation will be found to be of great assistance to the landscape-designer. Trees, her- baceous plants, and vines may be grouped in the same fashion; for example, the Colorado blue spruce, the Japanese ivy, and the willow. The season at which the major color interest is most highly developed will determine the princi- pal color usefulness of the plant. Color planting is of two sorts; one to produce unity, and the other accent, though all accents should be unified by balance of attractiveness if not of similar color. The unity will be secured by the predominance of either value or hue. Intensity at its highest tends to differentiate colors, so when the opposite of intensity or neutrality appears, that is also a unifying element. Unification is only a matter of selection. Shrubs may be chosen according to their values, light, medium, or dark; or because yellow, red, or blue appears as a modifying element in all. If both one value and one hue are given preference, 102 LANDSCAPE GABDENING there will be too little variety (except in case of formal planting, where form is the principal con- sideration) , and monotony will result. The problem may be stated in another way: if values be similar, considerable color range is per- missible; and if the colors be similar, the values need not be restricted. In this very point it may be seen that the impress of a designer's person- ality and sense of discrimination may be stamped upon a garden, for Nature does not discriminate, but plays all the truifT£)-cards possible-*at every turn. Nature limits herself only by conditions of growth; the landscape-designer should be less ec- lectic. Unity in a design will impress the be- holder with a sense of fitness and completeness. Accent in color may be secured in two ways, either by emphasizing the predominating color by a strong intense note of the same hue or by con- trasting a complementary hue with the major color note. Of the two methods the contrasting will give the stronger accent. A change of value will increase the emphasis in both cases. Where the contrasting method is employed, it is not al- ways necessary to use the exact complementary, or greatest possible color contrast, for sufficient accent may be secured without going to such an COLOR 103 extreme. It is merely a question of nice adjust- ment, which .will depend largely upon the good taste of the designer. Since accents are not conducive to unity, in each planting scheme there should be a distinctly larger amount of unifying than accent planting. If this is done, the accents will brighten and tone up the whole, instead of seeming to struggle for superiority. This is where the layman most fre- quently errs ; his planting is a system of color ex- clamations. Accents should never appear in filler shrubs, since these are always a unifying element and should not be disturbed; the accent must appear either in the background or in the facer. Where trees to be seen from a distance require accent, it should always be given by a shrub facing. Even though the accent colors differ widely from the rest of the color scheme, it will be of advantage if the dominating color note appears in them to a slight extent. This will insure their perfect amalgamation. If a planting scheme is on a large scale and di- vided into distinctly separate parts, it will often be well to allow the accent color in one scheme to predominate in another: it will be a sufficiently 104 LANDSCAPE GAEDENINa different use of color to convey an entirely differ- ent impression, and yet it will not necessitate dragging in still other colors, and working out ad- ditional schemes of harmonization. It will be seen, then, that every color scheme should have a predominance of quiet color. There are almost always excellent opportunities for accent, but these should be treated with con- siderable reticence. A color scheme should be restful rather than stimulating. IV PLANTING A THOROUGH knowledge of plant materials and their possible uses in landscape work is of great importance to the landscape-designer, inasmuch as most of the effects he desires to create, in the working out of any problem where plants are em- ployed, depend upon the intelligent use of these plant materials.) In a large way topography affects the design scheme, and this topography may be taken without change, as it occurs in the problem, or it may be altered to suit the requirements better. This al- teration will depend upon the extent of the scheme at hand and the amount of money to be laid out upon it. Planting is often used topographically to give effects of height and to emphasize or obscure ele- vations. In the diagram showing the section of hillside planting (Fig. 21) it will be seen that the scale of the plant materials has been very carefully arranged to take advantage of the topography. 105 106 LANDSCAPE GABDENING Plant materials are used in various ways, ac- cording to the purpose in view ; for the problem of the landscape-designer, aside from determining more or less the general characteristics of the ar- chitecture present, is to improve the landscape surroundings of the building, and to tie them and FIGURE 21. HILLSIDE PLANTING TO PRODUCE ILLUSIONS OF GRADE the buildings in with the prevailing type of land- scape, wherever his problem may occur. He will use his plant material, then, in many ways: for screening objectionable features, such as service walks and drives and outbuildings (Fig. 22) ; ty- ing buildings in with their surroundings; calling attention to points of interest that might otherwise PLANTING 107 have been overlooked, such as a distant view; for the elaborating and harmonizing of architectural detail, as in setting off a monumental building to the best advantage ; and in supplying a setting for special features, as for instance, a background for a large scheme or a foreground beyond which the general scheme is to be seen. ) As a landscape scheme depends for its chief in- terest upon the first impression received by the beholder, the importance of the point of view can- not be overemphasized; therefore, as the number of points of view in a problem increases, the com- plexity of the plant composition increases corre- spondingly. The first favorable impression made by a land- scape scheme as seen from a distance must be maintained at shorter range, and the massing of plants and shrubs must be accomplished so nicely as to stimulate interest for a nearer view and a closer analysis. If an estate is beautiful, it need not present a blank wall or screen of plant material to the gen- eral public in order to be sufficiently secluded for privacy (Fig. 23) ; neither is it necessary that its owners, willingly or not, must live in the public eye. It should appear attractive from without, 108 LANDSCAPE GAEDENING but this attractiveness should be secondary to the more important interest of those who are gazing out from within. In the planting of large parks or public proper- ties the consideration of varying points of view is found to greater extent perhaps than in any other problems which the landscape-architect may undertake. These are often of small extent, oc- cur generally at the intersection or radiation of streets, and are seen from a number of different points of approach. It is very essential that the park should appear in an equally favorable light from any one of these approaches, and its compo- sition must therefore be much more carefully studied than an off-scape, which is to be seen from one position only. Planting is often employed in architectural composition to carry out the lines of a design and to unify the general impression. It gives a greater breadth to this impression and emphasizes the salient features. It furnishes an easy transi- tion from one building to another, and is a great help in harmonizing groups of buildings of differ- ent types. A sense of fitness is so evidently lacking in num- PLANTING 111 bers of architects who are called upon to design additions to educational and municipal institu- tions and groups that it is frequently necessary to employ a great deal of planting in order to make the results bearable. This is particularly true where different architects have been called upon to design buildings of the same group. In such cases there often appears an uncommendable de- sire to emphasize the particular building under consideration by making it of much more attrac- tive appearance than the other members of the group, rather than a wish to unite diverse elements more closely and add to the collective beauty of the scheme. Planting may also create new interests. In many cases where architectural elements are markedly dominant it is impossible to introduce sufficient accent architecturally without either the introduction of a different style or an unwarranted distraction of attention. Many times the needed interest may be supplied by planting without marring the architectural effect. In such cases the lines of the large planting masses are arranged to harmonize with the architectural lines, and ac- cent is obtained by the mass characteristics of the 112 LANDSCAPE GAKDENING plants. If the problem were of horticultural em- phasis, the accent would probably be achieved by varying shapes, sizes, or colors (Fig. 24). ^Planting is divided into two classes, according to its use, whether for beauty alone or for more practical purposes. These classes are called the esthetic and the economic.) In the economic class, plant material is em- ployed for strictly utilitarian purposes, beauty being a secondary consideration. It subdivides large schemes, taking the place of more artificial barriers, and screens objectionable features, so that utilitarian buildings, service courts, and other features which are not essentially attractive may be present where they are most needed without marring the general beauty of the scenery. Eco- nomic planting is accordingly unobtrusive, and cannot afford to attract direct attention to itself, as in so doing it would disclose the presence of the object which was to have been screened. fWhere plants are used in an esthetic way they fall into three classes of treatment : first, they may be employed to aid in an architectural scheme, be- ing interesting chiefly on account of their form, as in the carrying out or emphasizing of architectural lines ; secondly, for the interest of the plant itself, PLANTING 115 as is generally the case with exotic material; thirdly, to enframe a view and direct the gaze to- ward distant prospects or pleasant features, thereby giving emphasis and accent to an other- wise monotonous scheme. On account of the widely different usage, the characters of economic and esthetic planting must be quite dissimilar. Economic planting, as has been stated, should be so very unobtrusive as even to escape notice, if possible. Consequently plants used in such a scheme will be indigenous to the lo- cality, very quiet in color, and not at all striking in outline. The most successful economic plant- ing is that which fulfils its function and at the same time attracts the least attention. Esthetic planting, on the other hand, allows greater latitude, and really demands the use of much more interesting material, as the attention is supposed to rest largely upon the plant material and its arrangement as an end in itself. As it has a wider variety of purpose, this will give a corre- spondingly greater range of selection, and will in- clude the exotic and subtropic plants. For esthetic considerations the planting is to tell first as dark masses against lighter areas, and this may be termed " contrast of value." This 116 LANDSCAPE GARDENING lighter or darker background may be a set of build- ings, any architectural work, such as walls, gates, or terraces, or a wide sweep of lawn and meadows in less highly formalized work. The sizes and lo- cations of these masses are determined by the problem in hand, and a successful solution will de- pend simply upon a nice discernment of their es- thetic and economic significance. In a large number of cases planting is valuable chiefly on account of its silhouette in elevation. This is generally the case in the informal style. In the formal gardens, where parts are filled with brilliant bedding plants, and where the whole scheme is seen at a glance, the plan will be of major importance; the accents alone will appear to any extent in profile, and they are often architectural. The plan will also be of utmost importance if the planting is to be looked down upon from a height, as often happened in the old Italian gardens of the Renaissance, which were almost invariably located on hillsides. It can be said, however, that almost all of these problems where the plan has greater significance will fall within the formal style of planting. In the informal style the elevation is of greatest importance, and the plan is considered mainly as PLANTING 119 affecting the elevation. Of course the plan and the elevation are interdependent, and it will be impossible to develop one satisfactorily without the other. Greater attention may be paid to either as occasion demands. Planting problems, as regards surroundings, fall into three large groups, which in turn are sub- divided. They are city, suburban, and country problems. At one extreme is complete architec- tural domination, and at the other the emphasis of natural surroundings.* In the transition from one type to the other one influence is constantly diminishing as the other grows. In some suburban problems the extremes appear to be rather evenly balanced. Under the city type will come the typical city home, almost exclusively architectural; then the city park, which may be a sort of playground for the chil- dren, or a square, either fQUJraffic purposes, or for the display of a monument or a feature to em- phasize an axis. This last use is probably seen to a greater extent in Washington, D. C., than in any other city in America. Boulevards and parkways are perhaps the most important field of the land- scape-designer in city planting. Under suburban planting problems will come * See Charles Elliott, "Landscape Architect," pp. 266-271. 120 LANDSCAPE GAKDENING two classes of homes: the large suburban estate, where expense of layout and upkeep is of no mo- ment; and the small home, such as brings joy to the heart of the commuter. There will also be the large naturalistic and countrylike park, the prop- erty of the great city. This park will have vary- ing planting schemes, with much natural planting ; golf-links, formal gardens, rocky hills, meadows, curving roads, and the utilization of water as a decorative feature, with its many possibilities in the way of bridges, fountains, and cascades. Parkways of a rather informal nature will be con- sidered here, and also the planting of residential streets as units. The country class of design has fewer ramifica- tions, dealing with only two classes of buildings: the large estate for pleasure purposes; and the farm, which is mainly utilitarian. In a country estate the trees and shrubs must harmonize with the surrounding landscape, and this controls in a large measure the selection of the plants used. Plants without pronounced single characteristics are used in large masses, while the more specimen- like shrubs are reserved for the smaller areas. Where trees appear in formal gardens they are considered as architectural features. This refers, PLANTING 123 of course, to the walled-in gardens, which are ex- ceptions to mass planting. But in the gardens of Italy, where the total area is often as large as a country estate, trees are frequently used as if they were shrubs, on account of the enormous scale of the garden, regardless of the surrounding land- scape. Plants are grouped as annuals, those that die every year; biennials, those that generally flower the second year and then die out; and peren- nials, lasting many years; greenhouse plants, which must be grown under glass ; bedding plants, which are started in the greenhouse; trees and shrubs which are classified as hardy woody plants. Planting material should always be chosen with the idea in mind of fitness for the function which it is to perform, and the location in which it is to appear. This has much to do with soil and cli- mate, which determine the scope of available ma- terial. } The satisfactory relation of plant design to its location may be loosely termed " style in planting." The material should be selected care- fully, so that it will seem to harmonize with its set- ting, whether this is architectural or naturalistic. For instance, in a colonial garden such as occurs at Mount Vernon, or in the modern estates built 124 LANDSCAPE GAKDENING on colonial lines, one would expect to find box hedges, the rose of Sharon, or hibiscus, rose arches, perennial phlox, peonies, and hollyhocks (Fig. 25). For decades, all these plants have been so closely associated with colonial gardens that their very presence suggests the proximity of colonial archi- tecture, and they serve admirably to carry out the spirit of the scheme. In a French garden one always finds bedding plants of gaudy colors, standard roses, bays, and clipped trees. A Florentine garden does not seem complete without the ever-present cypress tree, box hedges, laurels, crape myrtle, magnolia, and flowering plants in pots. In each of these cases the plant material employed is distinctly different, and yet distinctly characteristic of the class of problem in which it appears. I Balance and unity in planting are virtually in- separable. The scheme must appear to hang to- gether, and not be a number of loosely related parts. This compactness and relation of the di- visions of the planting scheme may be called unity, and is achieved through balance. .) Balance may be secured through color and by shape. 'It is not necessary that the colors and x PLANTING 125 shapes found on one side of a planting scheme should appear exactly reversed upon the other or opposite side, but only that the colors and shapes of certain interest in a scheme should be balanced by other colors and shapes of equal interest; in fact, symmetrical balance is very seldom found in informal planting. This may mean the employ- ment of different plant material to produce a re- quired effect. ( Unity is achieved by keeping all the plants in scale — that is, more or less of the same size — and allowing one color and one quality to predominate.^) Accent is really an unexpected arrangement, something growing where it might not have been expected, or in such a way as to increase the inter- est, giving an added sense of pleasure.) Great care must be exercised not to introduce it so frequently as to destroy the large and simple relations of the planting scheme. Where every member of the scheme is clamoring for attention, the result is a pandemonium in which no accent will appear. ^ Accent is sometimes achieved by unusual group- ing of shrubs, by single shrubs placed in advan- tageous positions, and by the introduction of ex- otic varieties. It may also occur in the use of varying shape, color, and size, though the varia- 126 LANDSCAPE GARDENING tion should be no greater than is necessary to pro- duce the desired accent. If too great contrasts appear, the accent planting will not seem in keep- ing with its surroundings, and there will be loss of unity. Accent is sometimes used to hold the eye within the narrow limits of a small planting scheme, and sometimes to carry it without the boundaries and fix attention upon distant prospects. An example of the first class, where unusual groupings, posi- tions, and unique materials are used, is the Japa- nese garden (Fig. 11). Probably no two elements in the garden are of exactly the same shape or size ; they may not even be of the same color. Each is to a certain extent an accent in itself and possesses a great deal of interest; but all these dissimilar interests are very carefully and subtly balanced, and all occur within such small confines that the eye is held by the interest of the individual plant shapes, colors, and grouping, and by the charm of the accessories, such as stone lanterns, bridges, and tea-houses, so that, indeed, there can be no thought of looking outside the garden. Italian gardens, on the other hand, from their very position on rocky hillsides, demanded that the distant views form a large part of their charm, and Photograph by Anderson FIGURE 26. VILLA ALDOBRANDINI, FRASCATI, ITALY An architectural enframement to emphasize an exterior axis 130 LANDSCAPE GAEDENING in consequence accent plants and architectural ac- cessories (Figs. 26, 54) as well are constantly placed in such a manner as to direct the gaze of the visitor to the off-scape in various directions. Wherever a particularly beautiful view occurs it is almost certain to be set off or enframed by some planting features (Fig. 27). Blinder the two large heads of the formal and the informal styles will be found different types which must be considered. } C Informal planting consists of irregular forms irregularly placed. Free-growing shrubs are used at unequal distances, and the spacing is deter- mined by the spread of the shrub and its age. Often, when planting for immediate effect, shrubs are set close together, with the intention of thinning them when they have attained a larger growth ; but in some cases they are spaced widely so as to allow for subsequent growth without al- teration of position. The shrubs are planted so as to express the outline of the bed in which they are placed when they shall have attained their growth. Informal planting allows a much wider range of shape, scale, and color in the same planting scheme than does the formal. Informal planting may be seen close at hand or at a distance, j If it FIGURE 28. WOODLAND PLANTING Natural growth on the Massachusetts coast PLANTING 133 is always to be seen at a distance, as in large parks, far from the driveways, detail is of no conse- quence, and any subtle plant characteristic will be lost. Therefore, in distant planting, it is neces- sary to seek for bold effect. If informal planting is used in a foreground planting scheme, as a bor- dering for driveways, the individual interest of the plants may be emphasized, and a great deal of at- tention given to detail. ( Formal planting consists always of regular forms regularly placed, but in a majority of cases, though this is not usually understood, the regular- ity is obtained by selection rather than by clipping. A certain amount of regularity must be the char- acteristic of a formal scheme. Straight lines and angles are emphasized on account of their greater precision, while the informal type lays larger em- phasis upon curves and rounded masses. In the formal type little is left to the imagi- nation. Few unexpected arrangements appear. The whole scheme is visible from one point, in- stead of unfolding gradually to the view. I This emphasis of lines and angles may be attained by the position of plants, spacing so as to define the outline sharply by the selection of plants of natu- rally regular shape, and still further by keeping 134 LANDSCAPE GABDEKLNG the plants restrained by clipping or tying. Formal planting is always used in connection with architecture where the architectural effect is to predominate, and the prevailing character of the lines appearing in the architecture must be re- peated in the plant masses. Accent can here be obtained merely by change of outline. (Falling more or less under the head of informal planting are several groups known to the land- scape profession as woodland and wild planting, gardenesque, naturalistic, park-like, and seasonal planting. • ( In woodland planting (Fig. 28) the trees occur close together, and are irregularly disposed, with the native varieties predominating. Under- growth may be used, or the ground may be kept clear. The trees are set at intervals, wide enough to permit the plantation to be seen into easily and have a more or less open appearance. Such plant- ing is useful only on a large scale. In wild planting (Fig. 29) trees, shrubs, and vines are allowed to grow at will, without any training, and wherever they may choose to stray.) This type of planting is seen of tener as a result of accident than premeditation, though there are rare instances where it is quite desirable. Wild plant- FIGURE 29. A PICTORIAL COMPOSITION IX AVILD PLANTING PLANTING 137 ing will of course consist entirely of native mate- rial, and will vary with the character of the soil. In gardenesque planting (Fig. 30) the emphasis is laid upon the horticultural element, and the plants are selected for their individual value. This may be due to the leaf, color, or perfume of the flower, as well as to the general shape and texture of the plant.) The plants may be grouped, and count as a mass from a distance; but upon closer inspection the individual plants should appear, otherwise their varying attractions will be lost. The position of plants in gardenesque planting is due to their character rather than to their height, so that scale would not necessarily be a determining factor in placing plants according to gardenesque treatment. Japanese planting as well as topiary work may be included in the gardenesque type. The English border, where shrubs are " faced down" with perennials, is a type of gardenesque planting, for the charm depends here upon the in- dividual plant, the rather delicate beauty of the perennial being strongly silhouetted against the darker shrub mass. Naturalistic planting is generally to be seen from a distance, and is composed of trees and na- tive shrubs. The mass is unrestrained in growth 138 LANDSCAPE GAKDENING and color contrast. )The position of the shrubs will be due to their height, and they will be " faced down." " Facing down" is the planting of small varieties close to the edge of larger ones in order to make them appear as a bank, and tie them down closely to the ground. As a rule, naturalistic planting is intended to be seen from a distance, and its boundaries are not often precise, but are al- lowed to merge gradually one into the other. Park-like planting (Fig. 31) tells first for mass and secondly for individual values. Trees are grouped in large masses, and small clumps occur near the edge of these masses, often with single trees of unusual size and beauty at some distance from the mass planting, so that an impression is created of large masses gradually becoming subdi- vided in such a way as to emphasize the individu- ality of single plants. This planting is not faced down. It occurs frequently in England. In seasonal planting any type may prevail, since the selection of plants is determined by the season at which they reach their greatest attractiveness, and this type of planting is such as will be used in an estate which is open at only one season. Con- sequently it is not necessary that the garden or the surroundings should appear to advantage at any PLANTING 141 other time of the year, and this permits a more highly specialized type of planting. Seasonal se- lection may apply in greater or less degree to any of the planting types. It is essential that the landscape-designer should arrange all his data in such a way as to be able to find the plants he wants for any special reason in the shortest possible time. • He may have designed a garden for a specific purpose, sea- son, and color, quite without reference to plant material, and now it is necessary for him to find the plants which will produce the effect he desires. The easiest way to do this is by the card-index, but it is very difficult to work out a card-index scheme that will contain in simple and accessible form all the characteristics of plant materials.jf Plants are grouped, regardless of their botanical classifica- tion, according to certain marked features which lend special emphasis or attraction. Under these headings are height, form, quality, characteristics, season, value, texture, color, and soil. Shrubs are divided into three classes according to their height: a, low; To, medium, and c, high. Height is a primary consideration in all planting schemes, as it determines the scale of the entire planting problem. 142 LANDSCAPE GARDENING FIGURE 31. PARK-LIKE PLANTING AT WARWICK, ENGLAND The scale which is to prevail in the planting scheme should in turn be fixed by the requirements of the problem in hand. If a screen were to be planted to hide a garage from the eyes of pass- ers-by, a hedge of California privet would be of little value, as it would not perform the purpose for which it was placed there. It would be neces- sary to use higher shrubs or even Lombardy pop- lars, placed close together, if it were really neces- sary to conceal the building. The scale of the planting may be determined on SB'S ^"SS /"\ r? 0* m ^L ^^J f*— 1 f WQ /W ^« »" IM I U 2i"" O^ , — s.is^ g«H f|? fi ^ — *