PORTLAND, Ore. (KOIN) – The dreaded emerald ash borer has made its way into Portland, and it poses a threat to every ash tree in the city. The invasive beetle from East Asia has already had a ...

The emerald ash borer, a tiny beetle responsible for killing ash trees across North America, was spotted in three new ...

PORTLAND, Ore. (KOIN) – Portland is bracing for yet another threat to the city’s greenery. The emerald ash borer, a half-inch-long metallic-green beetle, is expected to arrive in Portland soon. More ...

Oregon officials are warning about the spread of an invasive insect spreading across the Willamette Valley.

A tiny beetle known for decimating ash trees throughout North America and Europe has been discovered for the first time in Portland and has spread to new sites in several other counties where the ...

PORTLAND, Ore. (KOIN) – The City of Portland is taking steps to prepare for the invasive emerald ash borer despite no confirmation of it yet in Multnomah County. The bug has already been spotted in ...

An invasive, tree-killing pest has made its way to Portland, spelling trouble for the many ash trees that cool residential neighborhoods on hot summer days. On Wednesday, Oregon forestry officials ...

Portland’s urban foresters are girding for the impending destruction of the city’s ash trees by the emerald ash borer. The beetle—green, shiny, and smaller than a thumbnail—has been found in the four ...

An error has occurred. Please try again. With a The Portland Press Herald subscription, you can gift 5 articles each month. It looks like you do not have any active ...

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 ...