My Che tree seems to be having an issue. Anyone else having this, or a similar problem, with this tree?
As you can see it appears as though there are holes forming in much of the bark. I havent noticed any insects particularly on this tree. I also havent noticed the local (small) woodpeckers paying this tree any attention. (They like a nearby silver maple)
That resembles the damage that I often see in black locust attacked by stem borers.
Quick search indicates that Maclura pomifera (Osage Orange) is routinely attacked by 4 different species of borers.
Cudrania has been reclassified as Maclura tricuspidata in recent years - and we’ve long known that it was related to, and graft-compatible (as yours is) with M.pomifera. As such, I wouldn’t be surprised if Che was susceptible to similar borer damage.