» Greater Brookland Garden Club    Encourages residents to take action with public and private green spaces. Includes events, projects, photographs, membership information and tour brochures.    http://www.gbgc.org/

» National Capital Area Federation of Garden Clubs    Encompasses more than 100 garden clubs in the metropolitan area. Gardening information, calendar of events, and list of member clubs and affiliates.    http://www.ncafgardenclubs.org/

» National Capital Cactus and Succulent Society    Works to educate and inform members. Includes activities and membership information.    http://www.cactus-mall.com/clubs/nccss.html

» National Capital Orchid Society    Information on the club's activities, including its annual orchid show and orchid auction.    http://www.ncos.us/

» Potomac Hosta Club    Its activities include plant sales, speakers, and garden tours. Club calendar, FAQs, and information on membership.    http://members.aol.com/potomacgiboshi/