How Do You Identify Tree Galls In Quaking Aspen Trees?
Galls are abnormal growths that may be found on nearly every part of quaking aspen trees, from the roots to the leaves. Reactions between the plant’s hormones and chemical signals from certain insects are responsible for most tree galls, which can take on many different forms. Many galls on quaking aspen trees are caused by the poplar twiggall fly. The tiny flies overwinter in the galls as maggots, and leave the galls behind once they are finished with them. Although they are disfiguring, most galls are ultimately harmless. However, they may weaken parts of the tree over time. Observe the area directly below new buds on a quaking aspen tree, as this is a favorite spot of poplar twiggall flies. If a gall is present it will at first be an indistinct swelling, but after a few months it will appear as smooth knot below the leaf. Observe the leaves of the quaking aspen. Galls on leaves may resemble brown or yellow bubbles protruding from a leaf’s surface. Look for growths along the tree bra
