What are the growths on my oak tree?
What are the growths on my oak tree? These growths are known as galls, and alarming as they may seem, they do not injure the plant. Galls are abnormal growths or swellings of plant tissue often caused by the attack of an insect. Galls on oaks are most often caused by small wasps or midges. Insects that cause galls to form are known as gallmakers. What are the fuzzy balls on oak leaves? Orange galls, fuzzy galls or fuzzy orange galls, no matter what you call them if you have an oak tree in your yard or on your property...