Leaves somewhat round in shape, with a pointed tip and 5-15 coarse teeth on each side of the leaf. Leaves are densely silvery hairy when young, hairless when mature, and flutter in the wind. In the late spring, catkins release abundant seeds with cotton-like hairs. The bark of small to medium-sized trees is typically smooth and light tan to olive-green in color. Found in dry, open woods and recent clearings.
Bigtoothed aspen trees flower and disperse their fruit before the leaves emerge, generally between April and May. The leaves generally emerge in late May. According to the US Forest Service, air temperature appears to be an important factor in determining when and for how long Big toothed aspen trees flower.