Strange growth on a tree
I have never seen anything like this but I’ll send picture to a specialist it may require sending a sample
It appears to be cherry leaf gall caused by Eriophyes cerasicrumena. Not a big concern just unsightly. They can Google and see pictures. Send them to this site bugguide.net/node/view/277497 This is from a specialist
Thanks so much for the response. I haven't seen any evidence of insects but at least I know this is harmless. But the maple tree next to it is showing minor signs of the same thing on just one limb. It sure is unsightly. I was concerned it might be contagious and affect other trees. I'll read more about it and see if there's anything I can do for it.