Emerald ash bore treatment

Asked July 4, 2014, 2:56 PM EDT

How does a homeowner treat my ash tree to prevent the beetle from destroying the tree?

Pottawattamie County Iowa

1 Response

Thank you for your message and for contacting Iowa State University Extension & Outreach.

Insecticides can be applied to the soil under ash trees or injected by professionals into the trunk to protect a vulnerable ash tree from attack by the emerald ash borer. Large trees greater than 20 inches in diameter require treatment by a professional. Trees smaller than 20 inches can be treated by the homeowner, though D-I-Y treatment becomes less effective the larger the tree.

For details on ash tree treatment so the following publications:




Donald Lewis