An emerald ash borer larva chews through the cambium layer of an infested ash tree in Armstrong, located in Emmet County. A buildup of feeding tunnels cut off the vascular or “plumbing system" of a ...

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 ...

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 ...

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

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, ...

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 ...

The Fort Worth Botanic Garden is thanking a group of tree specialists for donating their services to protect ash trees in the sprawling garden from the invasive emerald ash borer beetle. The ...

PORTLAND, Ore. (KOIN) — Invasive emerald ash borer beetles were discovered in three more Oregon counties this summer, officials said. Emerald ash borers are small metallic-green beetles native to ...

MANKATO — Take a walk outside today. Look left, look right and then look up. What do you see? Or more importantly, what do you not see? A major urban forestry initiative is reshaping Mankato’s tree ...