Answer: Maples don't generally drop their bark unless there's some sort of injury. If insects do damage, or if the bark is sunburned, it could peel away. Since the problem seems to be on the newest, most tender bark, I'd suspect a cultural problem; perhaps sun and drought. Locusts generally feed within a few feet of the surface of the soil, not 50' in the air, so unless there's extreme competition from hordes for very little food, I don't think locusts are the cause of the problem. Trees that are stressed can attract all kinds of disease and insect problems, simply because they are stressed. I'd take a wait and see attitude. If the trees were thriving prior to the drought stress of this year, they will probably survive and recover. If they were ailing, this additional stress may do them in. There's really nothing you can do but wait, and hope for the best!
Q&A Library Searching Tips