American Association of Port Authorities
American Society of Landscape Architects
Association of Collegiate Schools of Planning
Association of Pedestrian and Bicycle Professionals
Association of Professional Landscape Designers
Canadian Society of Landscape Architects
Council of Botanical and Horticultural Libraries
Council of Landscape Architecture Registration Boards
Environmental Design Research Association
European Foundation for Landscape Architecture
International Association for Landscape Ecology
International Federation of Landscape Architect
International Society of City and Regional Planners (ISOCARP)
Alliance for Historic Landscape Preservation
American Public Gardens Association
Architects, Designers, Planners for Social Responsibility
California Horticultural Society
California Native Plant Society
International Federation of Landscape Architects
National Recreation and Park Association
Society for Ecological Restoration