- North American Native Plant Society (NANPS)
 - Celebrating the unique botanical heritage of North America through the study, conservation, cultivation, and restoration of native plants. - (AU) Australian Plants Society
- Promoting the establishment and breeding of Australian native plants for gardens, parks, and farms.
- (AU) Gardens for Wildlife
- Working to bring together expertise and resources to promote indegenious and ecological gardening.
- (AU) Society for Growing Australian Plants
- For people interested in the cultivation, propagation, conservation, and appreciation of Australia's native flora. Includes a plant guide and landscaping ideas for native gardens.
- Arizona Native Plant Society
- Arkansas Native Plant Society
- California Native Plant Society (5)
- Colorado Native Plant Society
- Nonprofit organisation dedicated to the appreciation and conservation of the Colorado native flora.
- Georgia Native Plant Society
- Indiana Native Plant and Wildflower Society
- Promoting the appreciation, conservation, beauty, diversity, and environmental importance of indigenous vegetation.
- Louisiana Native Plant Society (LNPS)
- Working to preserve and study native plants and their habitats, and promote the propagation and use of native plants in the landscape.
- Maryland Native Plant Society
- Dedicated to protecting, conserving, and restoring Maryland's native plants and habitats.
- Missouri Native Plant Society
- Promotes the enjoyment, preservation, conservation, restoration, and study of the flora native to Missouri.
- Native Plant Conservation Initiative
- A consortium of federal government member agencies and non-federal cooperators working together to conserve and educate people about native plants.
- Native Plant Society of New Mexico
- Native Plant Society of Oregon
- Native Plant Society of Saskatchewan
- Formed to promote understanding and conservation of native plants and their ecosystems.
- Native Plant Society of Texas@
- Utah Native Plant Society
- Dedicated to the understanding, preservation, enjoyment, and responsible use of Utah native plants.
- Washington Native Plant Society
- A nonprofit group dedicated to the appreciation, study, and conservation of our native flora and environment.
- Wild Ones (1)
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