Hello fruitagal. Ken here with The Home Depot in the Chicago area. I’m sorry to hear
about your honey locust. It sounds like you have honey locust borers. They are usually
a secondary pest resulting from a tree that is stressed, injured, or dying. Is your tree
stressed from recent transplanting, drought, or mechanical injury from mowers or string
trimmers? The best way to avoid borers is to keep the tree healthy. Here is a link to the
Morton Arboretum website on borers which has great information on symptoms, life-cycle,
and control. Good luck and keep me posted on your tree.