MINNEAPOLIS — Minnesota's warm winter has hurt the fight to control invasive species that attack trees and plants. Common invasive insects we see each year cannot survive typical Minnesota winters.

With wispy tufts that drape trees like haunted-house cobwebs, old man’s beard lichen can be an unexpected sight in northern Minnesota forests. It resembles a petite version of Spanish moss seen on ...

As the world warms, trees in such forests will no longer be adapted to their local climates. That’s where assisted migration comes in John H. Tibbetts, Knowable Magazine On a brisk September morning, ...

Cory Netland is a Department of Natural Resources area wildlife supervisor working out of New London, Minn. — not too far from where he grew up. Like the state’s other 80,000 or so pheasant hunters, ...

The University of Minnesota’s Cloquet Forestry Center as seen on Sept. 12 near Holyoke. When it comes to staying informed in Minnesota, our newsletters overdeliver. Sign-up now for headlines, breaking ...

The eastern spruce budworm is a native insect that munches on balsam fir, leaving some 1,100 square miles of trees defoliated or dead last year, the most in the region since 1961. A spruce budworm and ...

Scientists at the University of Minnesota published a study in the journal Forests in November 2025 about the potential for fungi to slow the spread of emerald ash borer, a beetle that kills ash trees ...