Montana
- Official State Arboretum - Campus of the University of Montana - Missoula
- Gatiss Gardens - Kalispell
- International Larix Arboretum - Hungry Horse
- Montana Arboretum and Gardens - Montana State University, Bozeman
- Tizer Botanic Gardens & Arboretum - Jefferson City
Read more about this topic: List Of Botanical Gardens And Arboretums In The United States