Alpine Garden Society
Plant society for growers of alpine and rock-garden plants, with a seed exchange for members.
Open recordA field directory for gardeners.
Find reviewed seed banks, botanic gardens, institutes, societies, community projects and useful horticultural resources.
Verified reference archive
Useful places for gardeners
American Horticultural Society
US nonprofit organization supporting horticultural knowledge and practice.
Open recordAustralian Institute of Horticulture
Professional organization representing horticultural practitioners and sustainable horticulture.
Open recordCanadian Society for Horticultural Science
Canadian professional society for horticultural researchers, educators and practitioners.
Open recordInternational Society for Horticultural Science (ISHS)
International society connecting horticultural scientists through symposia and publications.
Open recordPennsylvania Horticultural Society
Horticultural society founded in 1827 using gardening and plants to improve health and well-being in Greater Philadelphia.
Open recordRoyal Horticultural Society
UK horticultural charity supporting gardening practice, education, science and public gardens.
Open recordRoyal Horticultural Society of Ireland
Irish gardening charity founded in 1816 offering talks, garden visits and education.
Open recordRoyal New Zealand Institute of Horticulture
New Zealand institute promoting understanding, conservation and practical use of plants.
Open recordThe Garden Club of America
Nonprofit network of garden clubs promoting horticulture, conservation and civic improvement.
Open recordThe Hardy Plant Society
Gardening society for growers of hardy perennial plants, with local groups and a members' seed scheme.
Open recordSeedexchange members