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National Associations

• African Violet Society of America
  
  
• American Association of Botanical Gardens and Arboreta
  
  
• American Bamboo Society
  
  
• American Begonia Society
  
  
• American Clematis Society
  
  
• American Community Gardening Association
  Nonprofit membership organization of professionals, volunteers and supporters of community greening in urban and rural communities
  
  
• American Conifer Society
  
  
• American Daffodil Society
  
  
• American Dahlia Society
  
  
• American Fern Society
  
  
• American Fuchsia Society
  
  
• American Gloxinia and Gesneriad Society
  
  
• American Hemerocallis Society
  
  
• American Hibiscus Society
  
  
• American Horticultural Society
  
  
• American Hosta Society
  
  
• American Hydrangea Society
  
  
• American Iris Society
  
  
• American Orchid Society
  
  
• American Primrose Society
  
  
• American Rhododendron Society
  
  
• American Rose Society
  
  
• American Society of Botanical Artists
  
  
• American Violet Society
  
  
• Aquatic Gardeners Association
  
  
• Cactus and Succulent Society of America's (CSSA)
  
  
• Creative Floral Arrangers of the Americas
  A member-supported, non-profit organization
  
  
• Cycad Society
  
  
• Ecological Landscaping Association
  A nonprofit organization of dedicated landscape professionals, individual gardeners, educators, and more who are committed to educating themselves and others about ecological landscaping
  
  
• Garden Conservancy
  "A national, nonprofit organization founded in 1989 to preserve exceptional American gardens for the publics education and enjoyment."
  
  
• Gardeners of America / Men's Garden Clubs of America
  
  
• Hardy Fern Foundation
  
  
• Herb Society of America
  
  
• International Bulb Society
  
  
• International Geranium Society
  
  
• International Palm Society
  
  
• International Waterlily and Water Gardening Society
  
  
• Land Trust Alliance
  LTA is the national convener, strategist and representative of more than 1,500 land trusts across America.
  
  
• National Chrysanthemum Society
  
  
• National Garden Clubs
  
  
• National Gardening Association
  
  
• Natural Lands Trust
  
  
• Nature Conservancy
  
  
• North American Butterfly Association
  
  
• North American Native Plant Society
  
  
• North American Rock Garden Society
  
  
• Plant Conservation Alliance
  A consortium of ten federal government Member agencies and over 220 non-federal Cooperators working collectively to solve the problems of native plant extinction and native habitat restoration
  
  
• Society for Japanese Irises
  
  
• Torrey Botanical Society
  The objectives of the society are "to promote interest in botany, and to collect and disseminate information on all phases of plant science."
  
  
• United Plant Savers
  
  
• Wild Ones Natural Landscapers