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

Amid a years-long drought and insect infestation, Douglas fir have entered what scientists are calling a “decline spiral” in southwest Oregon. A study by Oregon State University faculty published in ...

An invasive bug that kills fir trees has been detected in northern Michigan, state officials said Tuesday. The balsam woolly adelgid has been found in trees on a residential property in Missaukee ...

Add Yahoo as a preferred source to see more of our stories on Google. Drought and insects have killed an unprecedented number of Oregon’s Douglas fir trees during the last decade, costing billions in ...

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, ...

Observers who are noticing dying conifer trees around the Roaring Fork River watershed can blame the Douglas-fir beetle. The valley has avoided many of the insect infestations that have decimated ...

(WSAW) - The Wisconsin Department of Natural Resources is asking landowners to be aware of an invasive species that has been detected in Michigan. Hemlock woolly adelgid target hemlock and fir trees.

Fraser fir is the classic Christmas tree — popular, shapely, with great needle retention and strong, silvery branches. It's the Cadillac of the cut-your-own tree lot. But what would it take to send ...

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