Answer: Your tree has galls. Hackberries are great native trees that are tolerant of many temperature, soil condition and moisture extremes. They have a few problems that are mostly cosmetic. The gall ...

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It can be unnerving to find that the leaves of an oak or hackberry tree are as bumpy as a rock-covered seashore in late summer. Other trees’ leaves may break out in acne-like red spots or sport ...

I was standing at Pavilion 1 in Lancaster County Central Park one day early in June when a hackberry butterfly landed on my left arm. Immediately its long, straw-like mouth came out and I could feel ...

A student plopped a leaf on my desk, pointed to several green lumps on its underside, and asked, “What are those green growths?” It was a stump-the-professor moment and in this case, I was, indeed, ...

A gall is an abnormal growth or swelling of a plant caused by hormones released from insects, mites, bacteria, or nematodes. They can appear on any part of the plant with vast variation in morphology, ...

Question: My hackberry trees are dropping leaves for no apparent reason. The leaves look fine, no bugs or mold spots or discoloration of any kind. Do you have any idea what might be causing the leaf ...

Galls are abnormal growths on the leaves and twigs of many plants. The oak trees in the Skiatook area have two kinds of galls, a leaf gall and a twig gall. Both are caused by tiny wasps. Galls provide ...