MINNEAPOLIS -- WCCO's report on a White Bear Lake woman's giant cottonwood tree – one of the biggest in the Twin Cities – struck a chord with our viewers. It also begged the question: What are the ...

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 ...

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, ...

The Minnesota Department of Natural Resources is reminding Minnesotans that not pruning or cutting oaks from April through July is the simplest way to curb the spread of oak wilt disease.

Dear Master Gardener: What kind of nut trees can we grow in northern Minnesota? Can we grow black walnuts? Answer: Hazelnuts are hardy in northern Minnesota (zone 3). The hazelnuts you find in the can ...

Many northern native tree species might not grow back there because they would no longer be suited to the region’s changed climate. Recently, Frelich and his colleagues studied a range of possible ...