An aerial survey conducted this past summer by the U.S. Forest Service and the Oregon Department of Forestry found more than 1 million acres with dead or dying fir trees in Oregon, the largest ...

but two pests targeting fir and Douglas-fir trees have made their mark, according to an annual aerial survey performed by the Colorado State Forest Service and U.S. Forest Service. Results were ...

The damage to fir trees was so significant researchers took to calling the blighted areas “firmageddon” as they flew overhead during aerial surveys ... but many view drought as the underlying ...

The USFS did not conduct aerial surveys in 2020 due to social-distancing rules around Covid-19. Firmageddon, as the researchers define it, appears to be limited to so-called “true fir” trees ...

Black-tusked tussock moth caterpillars are munching fir trees along Colorado’s Front ... The U.S. Forest Service and Colorado Springs launched the aerial attack to hammer the bugs over five ...

Courtesy of Oregon State University A new survey finds a growing number of Douglas fir trees in the Oregon Coast ... Though its growth has slowed recently, aerial surveys show the disease is ...