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.
While relatively healthy, forests in western Oregon face threats from climate stress, insects and disease. Here's a look at forest management strategies to cope with those threats and keep the state's forests healthy.
This is a bilingual publication (English and Spanish) for landscape workers and the public to help them protect Oregon birch trees from this damaging pest. Includes insect identification, host plants, signs and ...
Q: I had an arborist out because one of my birch trees had died and needed removal. He said it was the bronze birch beetle and that it was beginning to affect a second birch. He said it could be treated with a ...