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 ...

COEUR D'ALENE, Idaho -- If you want to impress your friends with your tree knowledge on your next hike, check out the upcoming class from UI Extension Forestry. On April 26, The UI Extension Forestry, ...

Some of the most spectacular forests of Douglas fir in the West are found on the west slope of the Cascade Mountains in Oregon. Though heavily logged by the timber industry for its straight-grained ...

My 2-year-old knows no one of that name. She wanted to see a tree. Throughout the pandemic, the two of us have trekked rain or shine to the green canopy of a solitary neighborhood Douglas fir. There, ...

I have forty 22-year-old Douglas fir trees that appear to have severe needlecast. Several of the trees appear to be just about dead. New grow appears very sparse. Is there anything that can be sprayed ...

The latest assessment of forest health in Colorado shows the Aspen area is experiencing a steady spread of infestation from Douglas fir beetles, but Pitkin County overall is faring much better than ...

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 ...