• BostonGardens.com
• CASA Community Garden
• Civic Garden Center (Cincinnati)
• The Gardeners of the North Shore (Chicago)
• Growing Green (San Francisco)
• Hill Country Master Gardeners
• The Horticultural Society of Maryland
• Houston and Gulf Coast Gardening
• The Greater Atlanta Rose Society
• Maine Nurseries
• Maryland Public Gardens Consortium
• New Mexico Master Gardeners
• Ornamental Horticulture for Houston
  and the Gulf Coast Area
• People, Places & Plants Magazine
• Santa Barbara International Orchid Show

National Gardening links