Bark beetles moving between trees routinely carry two fungi that are responsible for the Dutch elm tree disease outbreak.

U.S. Army Corps of Engineers Forester Andy Meier inspects an elm tree on the Mississippi River for possible signs of Dutch elm disease, which has wiped out many of the elms in the river's floodplain ...

For more than a thousand years in eastern North America, anyone who wanted to build a house or replace a roof, or maybe just needed a few storage bins, a canoe, and a snow shovel, knew where to shop.

If you spot tiny holes and piles of sawdust on your tree, bark beetles could be the culprit. Unfortunately, the solution ...

The American elm (Ulmus americana) was once a common sight on the Upper Mississippi River, but Dutch elm disease, or DED, has killed many trees. DED is an invasive fungal pathogen that is spread by ...

It's been more than three decades since Dutch elm disease was first spotted in Grand Forks. That first victim was a small tree that grew where the Grand Forks water treatment plant now stands. Since ...