The emerald ash borer, a tiny yet destructive invasive beetle known for wiping out ash trees on a large scale, has been confirmed at six new locations in northwest Oregon. First discovered in Forest ...

From British Columbia to California, volunteers are collecting ash seeds to help researchers at Oregon State University find genetic resistance to the invasive emerald ash borer. The emerald ash borer ...

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 ...

Researchers hope to identify Oregon ash trees resistant to the emerald ash borer and breed them to restore the species as it suffers from the pest. If the emerald ash borer’s spread into Oregon is a ...

PORTLAND, Ore. (KOIN) – The emerald ash borer is in Portland, and experts are calling on the city’s residents to protect their trees from the invasive beetle. But here’s the catch: A lot of bugs look ...

Samples for the study were collected by researchers from Penn State, the Forest Service and other partners around the Oregon ash range, extending from California, Oregon and Washington into British ...

The emerald ash borer, an invasive species of beetle, has been found in Portland. Local officials say it’s only a matter of time before the pests, which hollow out and kill ash trees, will arrive in ...

Researchers studying ash trees in the western U.S. have discovered a set of genetic variations that could protect the species from a devastating threat sweeping across the continent, according to a ...

I saw Oregon ash, Fraxinus latifolia, on a recent hike on Marin’s new Liberty Gulch Trail. (The trail starts at a bridge at Bullfrog Trail and follows the shoreline of Alpine Lake.) I noticed it ...

The invasive emerald ash borer, according to the U.S. Department of Agriculture, was first found in the United States in southeast Michigan in 2002. In the decades since, the wood-boring beetle has ...