Add Yahoo as a preferred source to see more of our stories on Google. A house, shaded by large trees. - Alex Potemkin/Getty Images When it comes to choosing the right fast-growing tree for year-round ...

Increases in mortality among Douglas-fir in the Klamath Mountains are the result of multiple factors that have the iconic tree in a "decline spiral" in parts of the region, a new study by the Oregon ...

Douglas-fir trees will likely experience more stress from drier air as the climate changes than they will from less rain, computer modeling by Oregon State University scientists shows. The research is ...

A Lakewood native who said he’s “been gawking at this tree for some 40 years” helped dismantle the city’s largest Douglas fir ...

A 400 to 600-year-old Douglas fir in Lakewood will be chopped down on Tuesday after the city deemed it to be sick and a risk for falling on nearby homes and public infrastructure.

SEATTLE — Crews began cutting down a large Douglas fir tree in Seattle’s Maple Leaf neighborhood Monday morning. The tree is one of three in the back of a lot with a small house that’s slated to be ...

Douglas fir is the most abundant tree species in the Pacific Northwest. It’s Oregon’s official state tree. And it’s arguably the region’s most important timber species. But like true firs, western ...

Increases in mortality among Douglas-fir in the Klamath Mountains are the result of multiple factors that have the iconic tree in a 'decline spiral' in parts of the region. Increases in mortality ...

CORVALLIS, Ore. (KTVZ) – Increases in mortality among Douglas firs in the Klamath Mountains are the result of multiple factors that have the iconic tree in a “decline spiral” in parts of the region, a ...

Amid a years-long drought and insect infestation, Douglas fir have entered what scientists are calling a “decline spiral” in southwest Oregon. A study by Oregon State University faculty published in ...