The $226,000 research project, funded by the Minnesota Invasive Terrestrial Plants and Pests Center, started in January 2024.

Siberian elm leaves are markedly smaller than the leaves of their cousin, the American elm ... which lays eggs on the tree's bark. When they hatch, the larvae bore into the tree, feeding on ...

Pests are ravaging keystone species like ash, elm, and beech ... of succumbing to beech bark disease. The deadly fungal infection often reveals itself through fluffy, white insect infestations. The ...

Above: An elm-lined street in St. Paul, MN, before most of the trees were killed by Dutch Elm Disease. Although the American elm persists in forests ... by brown streaks in the outer sapwood after the ...

Photos by Katie Finch Leaves are probably the most common feature used to identify trees. But in winter, when so many trees have dropped their leaves, combinations of other features are needed. The ...

Parking near the base, I came upon an experimental planting of American chestnut trees. Then ... the timber made good paper pulp, and its bark possessed a valuable extract used to tan leather.

Slippery elm is a supplement made from the inner bark of the slippery elm tree (Ulmus rubra), native ... such as cough and sore throat. Native American medicine systems used slippery elm-based ...

along with the first appearance of live banded elm bark beetles in American elm trees. Samples from the diseased trees were submitted for testing and the CFIA was notified. On Aug. 27 ...

Correction: A previous edition of this story erroneously stated the type of trees that the Dutch elm disease is impacting in North America. This disease is impacting American elm trees.