The city's American elm trees, some nearly a century old, are struggling this spring. These towering trees lining the ...

The 36 trees planted last week at Boutwells Landing senior living community in Oak Park Heights have a big job: To help revitalize the state’s elm population. The American elm trees, each about ...

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 ...

A startup called American Castanea has ... for “wound-inducible.” In these trees, the anti-blight action turns on—is induced—only when the tree’s bark is wounded, working something ...

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 ...

when city crews noticed symptoms of Dutch elm disease and live banded elm bark beetles in American elm trees. From there, samples from the trees were sent to the Alberta Plant Health Laboratory.