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Emerald Ash Borer #923881

Asked January 22, 2026, 6:45 PM EST

We have 5 Ash Trees in our HOA. All have been tested negative for Emerald Ash Borer. Could you please identify who we may contact to apply preventative treatments for the Emerald Ash Borer?

Marion County Oregon

Expert Response

Hi Bob,

Insecticides that target Emerald Ash Borer may only be administered by a licensed pesticide applicator. Here is a good overview of insecticide treatment for EAB, and the most effective insecticides to use: https://oregon-eab-geo.hub.arcgis.com/pages/eab-management#treatment

If you have any questions about EAB-approved insecticides or how to hire a pesticide applicator, you can contact the ODA Pesticides Program at <personal data hidden> or<personal data hidden>.

An Ask Extension Expert Replied January 27, 2026, 1:28 PM EST

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