Tree health specialists scan forests, looking for fir trees that have turned red, which indicates that they are dead. The U.S. Forest Service hide caption ...

Eastern Oregon's Malheur National Forest boasts some of the state's oldest trees, including pine and larch that live more ...

Oregon's 82-foot noble fir tree for US Capitol comes down without a hitch. Capi Lynn. Statesman Journal. WILLAMETTE NATIONAL FOREST - Jonah Gladney has cut down his share of trees, ...

Fir trees in Oregon and Washington died in record-breaking numbers in 2022, according to as-yet unpublished research conducted by the U.S. Forest Service. Called “Firmageddon” by researchers ...

An aggressive hatch of Douglas-fir tussock moth caterpillars is threatening trees, both in national forests and in Santa Fe.

A drone shot in the Wasatch Mountains near Farmington Canyon shows the balsam woolly adelgid's damaging effects on subalpine fir trees. An invasive insect is setting up shop within Utah's long ...

Trees share. Fast-growing birch send nutrients to slower-moving fir trees. In winter, the goods go in reverse. Birch, shorn of their leaves, receive sugars and carbon from evergreens.

Harvesting Christmas trees can actually be beneficial for the forest – if done right. Everything you need to do before heading out to the forest. How do you actually choose a tree and cut it down?

Models suggest that the actual amount of fir and spruce acreage damaged by budworm feeding in 2024 is closer to 10 times the 3,000 acres identified in the Maine Forest Service’s aerial surveying ...