North American Native Plant Society - Dedicated to the study, conservation, cultivation and restoration of native plants. Join us in our celebration of the unique botanical heritage of North America.
Wild Flower Society - Society for amateur botanists/wild flower lovers in the UK.
Heliconia Society of Puerto Rico - Offers photo gallery and online newsletter.
Useful Wild Plants - Project coordinated around Austin, Texas, to document plants native to the Southern United States and Northern Mexico in a multi-volume encyclopedia. Information about activities and volunteering.
Native Orchid Conservation Inc. - NOCI is a non-profit group dedicated to habitat protection, study and appreciation of native plants and their ecosystems.
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