“The Washington Association of Landscape Professionals (WALP) is a non-profit organization of landscape professionals dedicated to providing opportunities that promote professionalism, integrity, and education to a thriving membership within the Green Industry and the communities served.”
International Clematis Society
Fruit Gardener
Publication of the California Rare Fruit Growers, contains articles about fruits and vegetables that are of general interest.
Victoria Horticultural Society
Botanic Gardens of South Africa
Vancouver Island Rock and Alpine Gardens Society
“VIRAGS is a club of plant lovers living near Victoria, British Columbia, Canada, who visit, study, photograph, draw and grow alpine plants, bog dwellers and woodlanders, whether native or exotic. We encourage the propagation and distribution of plants.”
Holly Society of America, Inc.
English Garden
South African National Biodiversity Institute
Botanic gardens in South Africa
Hobby Greenhouse Association
“The Hobby Greenhouse Association is a nation-wide non-profit organization of people who enjoy growing ornamental and edible plants year-round through the use of various structures designed to provide the necessary or optimal environmental conditions for successful plant growth.”