PORTLAND, Ore. (KOIN) – The City of Portland is taking steps to prepare for the invasive emerald ash borer despite no confirmation of it yet in Multnomah County. The bug has already been spotted in ...

PORTLAND, Ore. (KOIN) – The dreaded emerald ash borer has made its way into Portland, and it poses a threat to every ash tree in the city. The invasive beetle from East Asia has already had a ...

Emerald ash borer, an invasive beetle that kills ash trees, was detected in Portland this summer, resulting in a quarantine zone expansion to try and curb the pest’s spread, according to the Oregon ...

A tiny but destructive pest has shown up in Portland after lurking in towns around the city proper since at least 2022: the emerald ash borer. An iridescent green beetle, the emerald ash borer wreaks ...