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Association of Northwest Landscape Designers
Events including the annual Garden Tour; news, and education for professional landscape designers in Oregon and Washington
Association of Professional Landscape Designers
Certification of landscape designers; link to Oregon chapter; search for a designer. Current issue of The Designer Magazine available to read online.
Hardy Plant Society of Oregon
Volunteer organization, for professional and amateur gardeners alike. The organization has a library available for members. Lots of events are listed.
International Society of Arboriculture, Pacific Northwest Chapter
ISA provides certification for Arborists. Links, events, resources for tree care professionals
Certification, training, events for irrigation professionals.
National Association of Landscape Professionals
(formerly Professional Landcare Network). Offers advocacy and certification for lawn care, horticulture, and landscape industry professionals.
Native Plant Society of Oregon
Works to preserve native plants, and for habitat conservation in Oregon; provides field research grants.
Oregon Association of Nurseries
Nonprofit trade organization for the Nursery industry in Oregon. News, events, scholarships.
Oregon Landscape Contractors Association
Not-for-profit organization for the landscape industry in Oregon. Certification, events, and resources for landscape contractors
OSU Extension Service
Gardening information from the regional Extension Service, at Oregon State University
Landscape Technology Tools