Politics· States Newsroom

Invasive beetle arrives in eastern Washington, threatens ash trees

States Newsroom · October 16, 2026

The emerald ash borer, one of the most destructive invasive pests in the nation, has been detected in multiple trees outside of Walla Walla in eastern Washington . Late last month, an arborist arrived at a home in College Place, a community southwest of Walla Walla. On an ash tree already in decline, the arborist…

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Invasive beetle arrives in eastern Washington, threatens ash trees

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