The emerald ash borer is deadly to ash trees—and aggravating for homeowners. Here's how to know if your tree has emerald ash ...

Just outside Cottage Grove at the U.S. Department of Agriculture’s Dorena Research Center, scientists are playing a numbers ...

The emerald ash borer, a tiny yet destructive invasive beetle, has been confirmed at six new locations in northern Oregon.

Over the summer, a private arborist noticed an ailing green ash tree at the David Douglas Aquatics Center near Hazelwood-Mill ...

The discovery puts all of Multnomah County into a quarantine zone. It’s the fifth county to be quarantined in Oregon.

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 ...

NEWBURYPORT — The city’s stock of healthy ash trees is under attack as the result of an invasive insect that is killing the canopy trees slowly but surely, according to local tree officials. Evidence ...

An invasive, tree-killing pest has made its way to Portland, spelling trouble for the many native ash trees that cool ...

This is a young ash tree in the author’s woods. It is approximately 7 inches diameter at breast height. Above the tape measure one can see vertical cracks in the bark, a characteristic of damage from ...

How do you find an insect the size of your fingertip in a densely-packed forest? For Jian Duan, the answer is simple: follow the dead ash trees. On a rainy day in eastern Connecticut, Duan, a federal ...

Last year, the Minnesota Department of Agriculture (MDA) confirmed emerald ash borer (EAB) in ash trees located inside the city limits. The MDA found woodpecker damage, bark cracks and tell-tale ...

SALISBURY — Pulling back the flaking bark of the green ash tree with the ease of someone peeling an orange, Jay Bolin exposes the evidence he expected to find. “Look at those D-shaped exit holes,” he ...