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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 clock is ticking for the few healthy ash tree groves still in existence around D.C. Twenty years ago an invasive pest arrived in the area, hidden away inside a shipment of ash trees headed for a ...

MADISON (WKBT) — The Wisconsin DNR is warning deer hunters not to place tree stands on ash trees that are potentially weakened by an invasive species. Most ash trees in the southern half of Wisconsin, ...

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, ...

Kris Dullmer of Ash Tree Solutions, right, injects an insecticide into an ash tree named Big Jim in the Catamount Community Forest to combat the emerald ash borer in Williston on Tuesday, June 25.

Ash trees are dead or dying because of the little iridescent green beetle The emerald ash borer's small size – no bigger than a cooked grain of rice – belies its destructive power. The beetle’s ...