Trees are, or soon will be, losing their leaves. That will make their trunks all the more visible. That’s when you’ll begin ...

Researchers with the University of Minnesota have discovered a tree-killing pathogen in the state for the first time.

Researchers at the Minnesota Invasive Terrestrial Plants and Pests Center identified the pathogen, Phytophthora ramorum, ...

A new tree disease, known as aspen running canker, was recently discovered in the N.W.T. This disease is often fatal to the ...

Anoka County will be planting 443 new trees to replace diseased ash trees in four of its regional parks thanks to a grant from the Metropolitan Council.

Researchers at the University of Minnesota found the “sudden oak death” pathogen at a Hennepin County nursery.