Browse resources Displaying 1 - 1 of 1 resources Credit Wyatt Williams, Oregon Department of Forestry (Cropped from original) Don’t cut down that ash tree just yet – Oregon won’t see full effect of emerald ash borer for years Currently, the emerald ash borer has been found in trees only in Washington County, where a quarantine prohibits moving ash (Fraxinus) or fringe tree (Chionanthus) wood in or out of the area. Kym Pokorny | Jul 28, 2023 | News story