White fir trees are part of the pine family, with a tall pyramidal form that brings a regal mountain magnificence to residential landscapes. This hardy evergreen conifer is lauded for its soft ...

The rapid decline of our largest and most prolific tree in the Pacific Northwest andmost important tree species to the ...

The University of Oregon claims approximately 4,000 different trees, over 500 species, stretch their branches across ...

Perhaps you’ve inherited a mature Douglas fir canopy. Or, maybe your garden was sunnier a few years ago, but as nearby trees ...

In 2008, scientist Bryan Black took core samples the diameter of a pencil from a forest near the north Oregon coast. Most of the trees were hemlocks and Douglas fir that had been undisturbed for about ...

Landscape and forest trees are experiencing widespread dieback this spring according to Glenn Ahrens, Oregon State University Extension Forester for Marion County. "Browning or dieback is usually ...

How smart are you? Well, then, what is the most common tree species in Maine? If you thought pine, you are wrong, even though we are called the Pine Tree State. Or, if you said the white birch, you’re ...

Drought can damage and sometimes kill Douglas-fir trees. Dying trees have been spotted frequently in western Oregon this spring. (Glenn Ahrens) Many Oregonians have noticed widespread damage in ...

HOUGHTON LAKE, Mich. – An invasive insect that kills fir trees has been found in Roscommon County, marking the fifth Michigan ...

Add Yahoo as a preferred source to see more of our stories on Google. Balsam fir mortality could increase if climate change gets worse, according to new research from the University of New Brunswick.