Hayes Arboretum
- Regional arboretum in Richmond presents information about walking trails, nature center, the preserved old-growth forest, and the collections of trees, ferns, and native woody plants.
- http://www.hayesarboretum.org/

Garfield Park Conservatory and Sunken Gardens
- Indianapolis recreational park with a tropical conservatory and European-style formal gardens, planted with three seasonal displays each year. History, programs, and events.
- http://www.garfieldgardensconservatory.org/

Indianapolis Zoo and Gardens
- The White River Gardens at the zoo combine gardening ideas and design and plant information into a botanical attraction. What's blooming now, and archive of previous entries.
- http://www.indyzoo.com/

Foellinger-Freimann Botanical Conservatory
- This oasis in the heart of Fort Wayne includes a showcase garden with lush seasonal displays, a tropical garden with orchids and palms, and a desert garden. Visitor information, calendar of events.
- http://www.botanicalconservatory.org/

Taltree Arboretum and Gardens
- Ecologically diverse reserve of woodlands, savanna, wetlands and prairie, woody plant collections and gardens in Porter County. Information about operations, events, education, and habitats, and a photo gallery.
- http://www.taltree.org/