Rocky Mountain maple or Douglas maple is a northern Idaho native shade-tolerant shrub or small tree. Long lived and multi-stemmed, it commonly grows to 4-15' tall but can reach heights of up to 40'. It favors moist to wet soils and does well on northern exposures. In arid areas, it is found in the mountains and moist canyons. In the fall the leaves turn beautiful yellows, oranges, and reds. Hardy between zones 4-6.