Tennessee Native Plant Society
- Botanical organization for persons interested in the state's native flora. Includes calendar of activities, photos, downloadable wildflower guidebook, and related links.
- http://tnps.org/

Tennessee Chapter of The American Chestnut Foundation
- Focused on bringing back this tree, by supporting breeding programs, finding and recording information about surviving American chestnut trees, and other efforts. News and information about the group, meetings, and activities.
- http://www.tnchestnut.org

Tennessee Exotic Pest Plant Council
- Information on plant pests and their eradication, as well as landscaping with native plants.
- http://www.tneppc.org/

Bioimages
- Images of southeastern US woody and herbaceous plants, key to common trees of middle Tennessee, and articles about plant features.
- http://www.cas.vanderbilt.edu/bioimages/

Tennessee Urban Forestry Council
- Includes Tennessee champion trees, landmark and historic trees, tree planting and pruning information, events calendar, and links to other urban forestry information.
- http://www.tufc.com/

University of Tennessee Herbarium
- Databases of fungi, bryophyes, and vascular plants in the collection.
- http://tenn.bio.utk.edu/

Southern Pine Beetle Infestation in Tennessee
- Statistics about pine beetle occurrence and damage in the state, information about identifying and controlling this insect, and links to additional information.
- http://www.state.tn.us/agriculture/forestry/health/spb.html

The Return of Native Grasses to Tennessee
- Article on Tennessee's native grasses and grasslands, with advice on the cultivation of native grasses.
- http://www.state.tn.us/environment/tn_consv/archive/grass.htm