Facts on Quaking Aspen Leaves

Aspen leaves change to brilliant yellow come fall.

The quaking aspen has the scientific name Populus tremuloides, which refers to the trembling aspect of the leaves in any sort of breeze. The quaking aspen has the widest geographical distribution of any tree in North America, according to the "National Audubon Society Field Guide to Trees."

Size

The leaves of quaking aspen are from 1-1/4 to 3 inches long and nearly as wide in most cases. The petiole (stem) of the leaf is as long as the leaf.

Effects

The round to broadly oval shape of the leaf and the fact that the petiole is flat and long make it possible for the leaves to sway rapidly back and forth when the air stirs even a little. Scientists say this lack of resistance keeps strong winds from snapping the weak-wooded aspen.

Color

The upper surface on the quaking aspen's leaf is a dark hue of green, but the underside is much paler and has a silvery shade to it. An easily recognizable white vein runs through the upper surface's middle.

Serrated Edges

The edges of the leaf, known as the margins, have serrations, which appear as very fine and rounded "teeth."

Considerations

In the fall, the leaves of quaking aspen turn a golden yellow color, although some having an orange look. This creates a striking landscape, especially where the trees grow together in abundance.

References

• Utha State University Range Plants of Utah: Quaking Aspen
• Ohio Department of Natural Resources: Quaking Aspen
• "National Audubon Society Field Guide to Trees;" Elbert Little; 2008