As a service to the public, the Lady Bird Johnson Wildflower Center collects information on native plant societies, conservation groups, governmental agencies, botanical gardens, arboreta, and other plant-related organizations throughout North America. Click here to add your organization to the directory. Affiliates are organizations that partner with the Wildflower Center to encourage the preservation and use of native plants in different regions of the country.

International Plant Propagators' Society

Address: Washington Park Arboretum
2300 Arboretum Drive. E.
Seattle, WA 98112

Region: Northwest

Phone: (206) 543-8602
Fax: (206) 325-8893
Web: www.ipps.org

Organization Structure: Private Non Profit
Organization Scope: International
Organization Type: Plant Research Center