Invasive insect species have, in the past 20 years, replaced native insects as the "biggest problem" facing Wisconsin's trees, said Bill McNee, a forest health specialist at the Wisconsin Department ...

FLAGSTAFF — As flurries started to descend on the forest floor, a team of researchers examined a stand of sickly quaking aspen trees off U.S. Highway 180, just north of Flagstaff. To an untrained eye, ...

It might be a good idea to dispose of this year’s Christmas tree sooner rather than later. While it’s not a regular occurrence during the holiday season, University of Wisconsin-Madison entomologist ...

As the Twin Cities fight against the infestation of an invasive beetle by removing Ash trees, new varieties of trees are being planted in their place. Since planting began on April 8, Minneapolis has ...

An unusual ally is helping scientists and homeowners fight an invasive pest in Ohio, according to the Columbus Dispatch. Ironically, this ally comes in the form of an invader. The tree of heaven ...

The Forestry Division says that last year, about 209,000 acres of trees died ...