On the wooded slopes surrounding the village of Kalavryta in southwestern Greece, hundreds of dying fir trees stand out among ...

Preliminary figures indicate that 1.1 million acres showed fir trees with some signs of dying — almost double the previous all-time high for the state since the survey began 75 years ago.

More than one million acres of forested land in Oregon contained dead or dying fir trees, indicated by red needles atop their canopies in this photo taken in July 2022 during an aerial survey ...

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 ...

The insect threatens nearly 1.9 billion balsam fir trees in Michigan’s forests, as well as the 13.5 million fir trees produced annually in Michigan for Christmas trees.

Topping my list of champions of snowy winters are our fir trees, which have numerous adaptations for wintery conditions. Eastern hemlocks and balsam fir are, literally, built for snow.

On the other hand, when the trees can be cleared by foresters and reseeded before the beetle kills them off, they replenish with about 800 to 1,000 new saplings per acre, well within the bounds of ...

Hemlock woolly adelgid target hemlock and fir trees. The pests are invasive, sucking, aphid-like insects causing trees to die. They are too small to be seen by the eye, but the damage is visible.

PORTLAND — Fir trees in Oregon and Washington died in record-breaking numbers in 2022, according to as-yet-unpublished research conducted by the U.S. Forest Service.

Hemlock woolly adelgid target hemlock and fir trees. The pests are invasive, sucking, aphid-like insects causing trees to die. They are too small to be seen by the eye, but the damage is visible.