Tree borers: It can cause lasting harm to your trees
If a tree has smaller than onehalf inch holes here and there on the trunk, it likely had an insect borer. Visible holes are made by adult borers leaving the tree, rather than an insect boring into the tree. Holes in the trunk indicate borers have been in the tree for at least one season.If there are rows or lines of about one-half inch holes on a trunk, especially pines, these are made b...
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