American trees are under attack, and it’s by an enemy that’s hard to spot. A tiny invasive pest, considered one of the most destructive forest insects ever to invade the U.S., is spreading across the ...

DENVER — The emerald ash borer, an invasive wood-boring insect, has been detected in Denver for the first time, the city said Thursday. The invasive beetle infests and destroys Native American species ...

This year, an invasive species specialist at the Oregon Department of Forestry found a matured ash borer in early May.

This mean, green, tree-destroying machine might be coming to your area — if it isn't already there. The emerald ash borer, native to Asia, was first spotted in the U.S. near Detroit in 2002. It's ...

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 ...

ST. PAUL — The Minnesota Department of Agriculture confirmed Monday, Dec. 11, emerald ash borer in Morrison County for the first time. There are now 46 counties in the state, including Morrison, with ...

The tiny green insect known as the most destructive forest pest in North America has been found earlier than usual this year.

One of the most destructive invasive insects in the United States has been detected in three more Oregon counties this summer, which could be bad news for the state’s ash trees. Federal and state ...

BRAINERD — An outbreak of emerald ash borer recently found in Crow Wing County was located in southeast Brainerd. And since it’s been found in one location, it’s likely spread — or a threat to spread ...

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 ...

HOLYOKE — A small green beetle burrowing in the city’s ash trees is putting them in danger. Officials are actively combating the emerald ash borer, an invasive species. Sometimes trees can be treated, ...

James E. Zablotny/USDA APHIS This week, crews removed dozens of infested ash trees in Forest Grove as part of a state plan to slow the spread of the destructive pest. This month, state agencies ...