There’s a tree killer on the loose in Oregon, and nobody knows how to stop it. An invasive green beetle called the emerald ash borer arrived in the Midwest from Asia, and it’s killed over 100 ...

In environmental news it’s Emerald Ash Borer awareness week and the Oregon Department of Forestry is working to slow the ...

Dominic Maze, a City of Portland biologist, discovered on June 30 that Oregon is facing an impending ecological disaster. Sitting on his truck tailgate and waiting for his kids to finish a day of ...

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 ...

“You just gotta be observant.” Wirth estimates there are about 200 acres of native Oregon ash trees on his family’s farm. With the recent arrival of the invasive and highly destructive ...

He used a modified painter's pole to hook a purple box suspended from an Oregon ash tree branch 20 feet in the air. After inspecting the trap's sticky surface, Sevey found no evidence of EAB.

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 ...

Researchers from Penn State collected samples from a specific species of ash tree called the Oregon ash, which exists up and ...

Since 2019, scientists at Penn State's Louis W. Schatz Center for Tree Molecular Genetics focused research efforts on Oregon ash (Fraxinus latifolia), a species that plays a critical role in the ...

Damage to a tree caused by emerald ash borers in Marion County (ODF) The Yamhill County beetle was found in a trap near Gaston, just seven miles away from where Oregon’s first emerald ash borer ...

Dr. Max Ragozzino with the Oregon Department of Agriculture held up an ash tree branch, pointing to the holes on one side. “In a sample like this, each of these little de-shaped exit holes is ...