The Yellowstone Arboretum is a nationally accredited arboretum featuring 300 species of trees and woody shrubs from many parts of the world including the Foster Wildfowl Refuge which is Montana's largest native plant garden with over 1250 specimens. The arboretum is a member of Botanic Gardens Conservation International and the Global Conservation Consortium. The arboretum is a non-profit, all volunteer organization. Donations accepted !