ODF Invasive Species Specialist WyattWilliams points to a tiny D-shaped exit hole made by an emerald ash borer as it emerged from an ash tree in Forest Grove.
The long-anticipated arrival in Oregon this summer of the destructive emerald ash borer sharpens concerns about the impacts to urban forests, wetlands and streams. On June 30, the emerald ash borer, an exotic beetle that infests ash trees, was discovered in Forest Grove, marking the first confirmation of the invasive pest on the West Coast. In Oregon, the establishment of EAB . . .