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Links to the horticultural sites of other educational and non-profit organizations:
Arnoldia
Butterfly Web Site
Cabrillo College Horticulture
Clematis Database at Hull University
Cornell University
Elisabeth C. Miller Library, Center for Urban Horticulture, University of Washington
Great Plant Picks
Illinois Cooperative Extension Service
Iowa State University
Juniper and Sage
Museum of Garden History
National Public Radio/Talking Plants
NatureScaping of SW Washington
New Jersey Agricultural Weed Gallery
Ohio State University
Oregon Association of Nurseries
Oregon Metro - Natural Gardening
Oregon State University Extension Master Gardeners
Oregon State University Horticulture
Pacific Horticulture
Perry's Perennial Pages
Seattle Tilth
Trees of the Pacific Northwest
University of British Columbia Garden & Center for Plant Research
University of California Weed Photo Gallery
University of Connecticut Plant Database
USDA Plants Database
Washington State University
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Hortlandia 2023
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