Aspen has distinctive, almost-circular leaves with flattened petioles or stems. This flattening causes the leaves to tremble or flutter in the slightest breeze, thereby giving the tree one of its ...

I’m pretty sure this was a quaking aspen (Populus tremuloides ... This time of year, without leaves, they are still interesting, charismatic trees with their thin chalky bark that often has ...

The ability of aspen to produce whole stands of "trees" vegetatively provides yet ... Why do quaking aspen leaves quake and tremble? The leaves of this species quake, shake and tremble in the ...

Because the spongy moth caterpillar ends its leaf-eating spree relatively early in the aspen tree's growing season, the defoliated trees produce a second flush of leaves to capture enough energy ...