An ash tree in Forest Grove, Ore. shows signs of emerald ash borer damage. The invasive beetle was first discovered in the city in June 2022, prompting a large state-led response to slow its spread.

PORTLAND, Ore. (KOIN) – Oregon is up against a tiny opponent that could cause massive ecological damage: the emerald ash borer. The invasive insect, which is considered the most destructive forest ...

An invasive insect has laid waste to an estimated 100 million ash trees across the U.S. Now Oregon foresters are taking pre-emptive steps to limit the bug’s impact. The emerald ash borer is a metallic ...

There is no evidence of North America's most destructive forest pest in Willamette Mission State Park. Ryan Sevey, a natural resource specialist with the Oregon Parks and Recreation Department, spent ...

The emerald ash borer, an invasive beetle that’s already killed millions of trees across the country, is spreading in Oregon. The beetle was first detected in Washington County, near Forest Grove, in ...

PORTLAND, Ore. (KOIN) – Oregon’s Emergency Board approved more than half a million dollars to support efforts to slow the spread of the invasive emerald ash borer. These invasive and destructive ...

SALEM, Ore. (KTVZ) – Oregon Department of Forestry staff recently completed an unprecedented effort to collect seeds from populations of Oregon ash (Fraxinus latifolia) trees throughout the Oregon ...

Do you have ash in your yard or neighborhood? Oregon experts discovered the invasive emerald ash borer in Forest Grove in late June. The emerald ash borer, originally from Asia, is predicted to have ...

The tiny green insect is likely to tear a path of destruction through Oregon ash, but its late arrival has given the state time to prepare. A couple of weeks ago, Dominic Maze was picking up his kids ...

Jennifer Killian knew the inevitable was coming. She just didn’t know how soon. As an urban forester for the city of Corvallis, her biggest fear was that the emerald ash borer, an invasive beetle, ...

FOREST GROVE, Ore. — Oregon agriculture officials have adopted a temporary quarantine to slow the spread of emerald ash borer, a highly destructive forest pest that has killed hundreds of millions of ...