Continuing education for horticulture professionals at the Center for Urban Horticulture and Washington Park Arboretum SPRING 20 0 3 OFFERINGS Basic Pruning Friday, March 7 Diagnosing Arthropod Pest Damage on Landscape Plants Tuesday, April 8 Common Root Rots in the Pacific Northwest: Recognition, Cultural, Biological and Chemical Controls Thursday, May 15 UNIVERSITY OF WASHINGTON COLLEGE OF FOREST RESOURCES for URBAN HORTICULTURE CENTER for URBAN HORTICULTURE Basic Pruning Friday, March 7, 9 a.m. to noon Graham Visitors Center, Washington Park Arboretum Instructor: Bess Bronstein, Horticulture Consultant and Edmonds CC Instructor Fee $35; Pre-registration required. ISA RECERTIFICATION CREDITS PENDING CPH CREDITS AVAILABLE THROUGH WSNLA This class at the Washington Park Arboretum will cover specific techniques to prune a variety of trees and shrubs. The class will then go into the arboretum for a demonstration of the techniques that were discussed. Please dress warmly and bring rain gear if needed. Diagnosing Arthropod Pest Damage on Landscape Plants Tuesday April 8 NHS Hall, Center for Urban Horticulture 10 a.m. to noon Fee $25; pre-registration required. WSDA PESTICIDE RECERTIFICATION CREDITS PENDING ISA RECERTIFICATION CREDITS PENDING CPH CREDITS AVAILABLE THROUGH WSNLA Arthropods are animals with tough outer skeletons, segmented bodies, and jointed legs, examples of which include insects, spiders, cockroaches, and millipedes. Most arthropods are harmless to plants, but some are considered pests. Diagnosis is the first step in a good IPM program. Accurately identifying pests and/or their damage is important to prevent unneeded management strategies. Not only is it important to avoid unneeded chemical applications, but to also avoid impacting non-target organisms. Dr. Art Antonelli, WSU Extension Entomologist, will address twelve categories of arthropod pest damage, from stipling to galling, and many signs and symptoms in between. He will show slides and provide students the opportunity to practice identifying signs and symptoms of damage likely to be seen in the Puget Sound area. Common Root Rots in the Pacific Northwest: Recognition, Cultural, Biological & Chemical Controls Thursday May 15, 8:30 a.m. to noon NHS Hall, Center for Urban Horticulture Instructor: Dr. Olaf Ribeiro, Plant Pathologist Fee $35; Pre-registration required. WSDA PESTICIDE RECERTIFICATION CREDITS PENDING ISA RECERTIFICATION CREDITS PENDING CPH CREDITS AVAILABLE THROUGH WSNLA This course will cover the diagnosis and control of com- mon root rots encountered in nurseries and landscapes in the Pacific Northwest. The first half of the class will go over Phytopthera diseases and the second half will cover other common root rots. Discussion on an IPM approach to control the pathogens described will be included. This will encompass the valuation of chemicals, biological controls and cultural practices such as the use of composts and soil amendments. Dr. Olaf Ribeiro is owner of Ribeiro Plant Lab, Inc. and is author of A Source Book of the Genus Phytophora and co-author of Plant Diseases Worldwide. Coming Soon! West Nile Virus Workshop For information on this developing program, check the website at www.urbanhort.org. West Nile Virus reached the state of Washington in 2002 and is here to stay. This workshop will be targeted to journalists, garden consultants, volunteers, and others who will, in turn, teach or offer advice to others. Included will be topics on the disease itself and its symptoms, history, and who is most at risk; mosquito biology and control; personal protection from mosquitoes; garden and property management; protection for animals; and gimmicks, myths, and shysters to avoid. Cooperating organizations include: •UW School of Public Health & Community Medicine •UW Medical School, Dept, of Comparative Medicine •Washington Cooperative Fish & Wildlife Research Unit of the UW School of Aquatic & Fisheries Science •U.S. E.P.A. Region 10 There is still time to register for the “Tools and Techniques to Manage the Urban Forest” symposium to be held on March 13 and 14,2003 at CUH.The symposium will review how urban forestry, environmental horticulture, and social sciences create strategies to manage natural resources in the urban environment. For registration and schedule information, check the web site at www.urbanhon.org or phone 206-685-8033. Linda Chalken-Scott named “Educator of the Year” for 2002 by WSNLA, The Washington State Nursery and Landscape Association has awarded Dr. Linda Chalker-Scott of CUH the Educator of the Year award for 2002. Linda writes a monthly column titled ‘Of Myth and Men’ for the WSNLA newspaper “B&B” and is an Associate Professor of Plant Stress Physiology and Sustainable Landscape Management. Students in her classes have gained valuable real-life experience in designing and installing sustainable urban landscapes. Congratulations, Linda, for this well-deserved honor. Could trees actually be the cause of air pollution? St. Louis has some of the highest formaldehyde air pollution levels in the country so researchers at EPA and Washington University are conducting a study to pinpoint the source of these unusually high levels. Cars and industries are known contributors of formaldehyde but the oak forests surrounding St. Louis are also suspect since oak trees give off isoprene that reacts with sunlight and water to create formaldehyde. Monitors are being installed near the forest to determine the actual contribution from the oaks, http://chblue.com/artman/ publish/ article, _l I I5.shtml Reprinted with permission of the Weekly NMPRO e-mail newsletter Seed Germination without Soil. One of the basics of horticultural science has been overturned. A new study claims that water vapor, not liquid water, is the necessary ingredient in soil to cause germination. Previously it was assumed that seeds must be in direct contact with soil to obtain water needed for germination. Stewart Wuest at the Agricultural Research Service showed that seeds separated from the soil by crop residue, fiberglass cloth, or even air germinated just as well as when they were in contact with soil. The results will influence water absorption models and potentially the design of seeding equipment, www.ors.usdo/gov/is/pr/2003/030/ 7.htm Reprinted with permission ofThe Weekly Dirt e-mail newsletter CENTER FOR URB/VN HORTICULTURE 3501 NE 41st Street University ofWashington Box 354115 Seattle, WA 98195-4115 Phone: 206-543-8616 Fax: 206-685-2692 www.urbanhort.org WASHINGTON PARK ARBORETUM 2300 Arboretum Drive East University ofWashington Box 358010 Seattle, WA 98195-8010 Phone: 206-543-8800 Fax: 206-616-2871 www.wparboretum.org The University ofWashington is committed to providing access, equal opportunity and reasonable accommodation in its services, programs, activities, education and employment for individuals with disabilities. To request disability accommodation contact the Disability Services Office at least ten days in advance at: 206-543-6450 (voice), 206-543-6452 (TTY), 206-685-7264 (fax), or e-mail dso@u.washington.edu. registration form C UNIVERSITY OF WASHINGTON COLLEGE OF FOREST RESOURCES /orURBAN HORTICULTURE 350 1 NE 4 I st Street University of Washington Box 354115 Seattle, WA 98195-41 15 NONPROFIT ORG. U.S. POSTAGE PAID SEATTLE, WA PERMIT NO. 62 09-9615 IIIKIIIIIilllllllllllllllllllllllllllllllllllllllllll Spring 2003 Seminar Registration CUH accepts checks, VISA, and MasterCard. Make checks payable to the University of Washington. Receipts available at the door. O Basic Pruning, March 7 $ 35 O Diagnosing Arthropod Pest Damage on Landscape Plants, April 8 $25 O Common Root Rots in the Pacific Northwest, May 15 $ 35 TOTAL $ Mail payment and registration to: Center for Urban Horticulture - ProHort University of Washington Box 354115 Seattle, WA 98195-41 15 For information, call 206-685-8033. 1 NAME COMPANY NAME , ADDRESS CITY STATE ZIP DAY PHONE (include area code) EVENING PHONE (include area code) FAX (include area code) E-MAIL ADDRESS CREDIT CARD NUMBER EXP. DATE NAME ON CARD