Height: 20′-30′ Spread: 15′-20′. Native tree to the Rocky Mountains. Characteristic white bark and golden-yellow, to occasionally orange-red, fall color. Pyramidal habit when young maturing to a rounded crown. Does best in well-drained soil. May sprout to form groves. Suffers from many diseases when planted at lower altitudes and in heavier soils. Full sun to part shade. Zone 2.