KC Gardens

If it's not the ash borer, what is it?


I read your article about the emerald ash borer but it doesn’t sound like that’s the problem I’ve got. I have a large ash tree and a week ago about 15-20 twigs from branches were on the ground. The leaves looked healthy and the wood looked like something had actually gnawed through it. It was a clean break. Since then, there have been only a few to fall. Do you have any thoughts? Thanks - Seneca -


  1. 9 months ago

    It’s good that you have a healthy ash tree.

    Two things come to mind: squirrels and twig girdlers. If the end of the twig looks like it has been gnawed from the outside in, like it was cut by a beaver, then it is probably twig girdlers.

    What to do? If you determine the twigs are the result of twig girdlers, you need do nothing, except you should clean up the twigs and destroy them so as to reduce the amount of larva for next year’s crop of beetles that are the culprits.

    Hope this helps.

    Carole Johnson County Extension Master Gardener

  2. 9 months ago

    My guess is the little pesky rodent, squirrels. Same advice that Carole gave pick up the pieces and forget about it.

    Dennis - Johnson County Extension

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