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 ...

Native fungi from forests killed emerald ash borers in lab tests, offering a potential new biological tool to slow the ...

Cornell is at the forefront of determining how "invisibility cloaks" and walls of protection may give ash trees hope of revival.

About 95,000 ash trees live in Portland, and most of them could become infected and die in the next few years with the recent arrival of the emerald ash borer, an invasive, tree-killing pest that’s ...

The emerald ash borer is here. Your ash tree just hasn't gotten the memo yet. If you've got an ash tree in Cookeville or ...

This non-native beetle kills ash trees by feeding on the layer beneath the bark, cutting off water and nutrients. Approximately one-third of the trees in Fort Collins are ash trees, making the city's ...

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 ...

In 2002 in Michigan, many ash (Fraxinus sp.) trees started to show obvious signs of decline, and after careful inspections, arborists and biologists soon discovered a pest unknown to the U.S. as the ...

More than 50 ash trees in downtown Dover will be removed over the next several years due to an invasive beetle, according to the city. The emerald ash borer beetle is killing the city's ash trees, ...

SIOUX FALLS, S.D. (KELO) — Seven years after the emerald ash borer first arrived in the state, the fight remains strong in a game of treating and removing affected ash trees. “We have noticed more ...

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 ...