I had something similar happen to my crepe myrtle
last season. I figured the tree was a goner, but this season the holes have closed up and the tree seems to be doing fine.
When I looked it up, it was some sort or beetle, I can't remember what kind. I did what you did though, and sprayed the trunk with an insecticide to make sure it didn't get worse.
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In response to this post by RoswellGAHokie)
Posted: 08/13/2018 at 08:53AM