Professional Landscape Architecture Associations

American Nursery and Landscape Association

1000 Vermont Avenue, NW
Suite 300
Washington, DC 20005-4914

Phone: (202) 789-2900
FAX: (202) 789-1893

American Society of Landscape Architects

636 Eye Street, NW
Washington, DC 20001-3736

Phone: (202) 898-2444
FAX: (202) 898-1185

Council of Landscape Architectural Registration Boards

12700 Fair Lakes Circle
Suite 100
Fairfax, Virginia 22033

Phone: (703) 818-1300
FAX: (703) 818-1309