Formulae (Insecticides)

[ 2893

Forsythia

with lime-sulphur at normal strength with
the exception of Cox's Orange Pippin,
which will only stand half-strength.

INSECTICIDES.

Carbolic Emulsion:A. repellent for use
against such pests as celery and carrot
Ły.

Carbolic acid ...... 1 pint.

Soft Soap......1 Ib.

Yv'ater .........10 gal.

Dissolve the soap in some of the water
already heated, churn in the carbolic, and
then make up to 10 gal.

Caustic Soda: A somewhat obsolete
method of winter washing, but nevertheless
a very effective method for destroying
moss and lichen and scale insects.

Caustic Soda ...... 3 Ib.

Water .........10 gal.

Wear goggles and protect all exposed parts
of the body when applying.

Hellebore Wash: Less poisonous than
arsenate of lead and therefore often used
for destroying caterpillars on quick-ripen-
ing fruit, now being superseded by nicotine
and derris washes.

Hellebore Powder ... 12 oz.

Water ......... 3 gal.

The powder remains in suspension, there-
fore the wash should be kept agitated
while spraying. Its sticking powers can
be improved by the addition of 4 oz. of
flour.

Lead Arsenate: Used for all biting
insects, but should not be applied to .any
fruit or vegetable just before gathering.
Eather than manufacture at home, the
amateur is advised to buy arsenate of lead
paste. Quantities and dilution will be
found on the tin.

Lime-Sulphur: This should be purchased
in concentrated form from a reliable
manufacturer. Use and dilute according
to instructions supplied with it.

Nicotine Wash: For all insects such as
aphides, pyella, and young caterpillars.

Nicotine .„ ...... f oz,

Soft Soap ....../ ... lib.

Water .........10 gal.

Add the Nicotine after dissolving the soap,
stirring well the wjbile. Very poisonous
and should be treated with the same care
as arsenate of lead.

Paraffin Emulsion: For use as a repellent
especially against certain vegetable pests.

Paraffin ....., ... I pint.

Soap .........lib.

Water .........1 gal.

Dissolve the soap in the water after
wanning it, then slowly churn in the
paraffin. Thorough emulsiScation mav be
obtained by means of a syringe. Bottle
this stock solution off. For use. take one
part of emulsion to from 10 to 20 parts
of water, according to the hardiness of the
plants to be treated.

Quassia, Wash: A somewhat obsolete but,
at the same time, an effective method for
destroying greenfly.

Quassia Chips ...... 1 !b.

Soft Soap ... ...... 1 Ib.

Water .........10 gal.

Boil the chips in some of the water for
two hours; dissolve the soap in hot water;
strain ofE the chips, thoroughly mis the
two liquids, make up to ten gallons.

Copper Sulphate: One pound of copper
sulphate crushed and dissolved in ten gal-
lons of water makes a good lethal spray
for slugs. It can be used to soak the soil
round plants subject to attack. The same
mixture, used as a soil drench round roses,
prevents the reappearance of Black Spot.
It should be sprayed freely on the roses
and soil in January.

FORSYTHIA. (for-si'-tki-a. Oleaceae).
Deciduous flowering shrubs, producing a
beautiful eflect with long arching leafless
branches, wreathed with a profusion of
golden-yellow flowers, like little golden
bells, from end to end, during March and
April. Useful planted in the shrubbery
or as a single specimen; can also be
treated as a climber, thrives on a north
wall. Perfectly hardy. Plant in autumn,
in rich loamy soil. Cut well back after
flowering. Propagate by cuttings taken in
June or July in frame; also by layering.
SPECIES.

F. europ&a. The Albanian Porsyiitia,
4r-6 ft, ^Flowers pale cream.

F. intermedia. 6-9 ft. Hyfaiidi (F.
suspensa -f JP. viridissima). More suitable
as a single specimen than for growing
against walls, etc.

P. i. densifolia. A distinct farm with
shoots densely crowded with the towers.

F. f. spectebilis. 6-10 ft. A seedling
form, with extra Large flowers of a deep
yellow, and more abundantly produced