New guy with some questions. Any idea what is going on with this tree. Looks like 8 or so mature oaks all is same area have this issue. Any help would be great. Thanks
Maybe some type of disease? The red spots maybe a reaction to it? I would think bugs would leave clean holes.
Looks like some kind of rust blight......I wouldn't be too concerned. Our Norway maples get a black spot blight every other year or so. By the way, welcome to the site!