Joe Boggs, Assistant Professor with OSU Extension and the Department of Entomology, is a regular contributor to Buckeye Yard & Garden onLine (BYGL for short). Last week, he released an article on maple petiole borer which can cause leaf drop on otherwise healthy maple trees. The petiole borer has a preference for sugar maples though other species are sometimes affected. Thankfully petiole borers are not a serious threat to the long-term health of infested trees, but moderate to heavy leaf drop at this time of year can certainly raise concern levels if you don’t know the root cause of the issue…now you know!!