California Certified Organic Farmers

Idaho Golf Course Superintendents Association

Idaho Nursery & Landscape Association

Inland Empire Golf Course Superintendents' Association

Napa Valley Grapegrowers

Northwest Turfgrass Association

Oregon Agricultural Chemicals & Fertilizers Association

Oregon Association of Nurseries, Inc.

Oregon Golf Course Superintendents' Association

Oregon Tilth

Oregon Winegrowers' Association

Peaks & Prairies Golf Course Superintendents Association

Rocky Mountain Agribusiness Association

Sierra Nevada Golf Course Superintendents' Association

Sonoma County Winegrape Commission

Sports Turf Managers' Association

Washington Association of Landscape Professionals

Washington Tilth Association

Western Canada Turfgrass Association

Western Washington Golf Course Superintendents' Association