Hudson Gardens
- A classic display garden in Littleton comprised entirely of plants, flowers, and trees that grow in the dry mountain climate. Offers classes, workshops, field trips and tours. Brief descriptions and photos of the many garden rooms.
- http://www.hudsongardens.org/

Denver Botanic Gardens
- One of the top-ranked botanical gardens in the U.S., with many thousands of plants from around the world. Offers garden directory, visitor and event information, and a plant database.
- http://www.botanicgardens.org/

Western Colorado Botanical Gardens & Butterfly House
- Grand Junction facility featuring sensory, native, cactus, and xeric gardens, a children's secret garden, as well as greenhouses showcasing orchids and butterflies.
- http://www.wcbotanic.org/

Betty Ford Alpine Gardens
- Garden in Vail showcasing the beauty and diversity of alpine flora. Includes information on the plant collections, calendar of events, programs, and garden descriptions.
- http://www.bettyfordalpinegardens.org/