Why Do Aspen Leaves Quake

Quaking aspens “quake” because of the way the leaves are attached. Each heart-shaped leaf is attached to the petiole (leaf stem), which is in turn attached to the branch. In the case of the aspen, the petiole is flat, instead of the usual round. … That causes the leaf’s trembling movement.

Why do aspen leaves flutter?

Quaking aspen’s scientific name is Populus tremuloides. … This name refers to the way in which the leaves flutter in the wind. This movement is created by the shape of the tree’s petioles (the stems that connects the leaves to the branches). Quaking aspen petioles are flat and perpendicular to the plane of the leaf.

What causes aspen leaves to curl?

The damage to the leaves is unsightly and really bad infestations can distort the twigs of the trees. The insects suck out the “juices” out of the leaves and as a result, the leaves curl up. That curling then makes perfect cover for the aphids to reproduce and thrive.