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 ...

Elm zigzag sawflies can munch on plants beyond their preferred elm trees when foliage isn't available, a new study suggests ...

PORTLAND, Ore. (K O IN) — A tree representing a piece of Oregon history is entering its final days. Despite efforts from arborists and experts to save an “iconic” 154-year-old elm tree in downtown ...

The oldest elm tree in Portland and possibly all of Oregon has suffered a rough 2024 so far — and city officials say they have no choice but to cut it down next month, about 150 years after it took ...

A city council committee backs seeking $100,000 from federal program to help assess the tree inventory this year, part of a ...

The elm zigzag sawfly is not a fly, but it is a problem. Since first being found in North America back in 2020, the species ...

Brown University’s 155-acre campus is home to thousands of trees and is recognized for its impressive American elm collection. Last year, the campus lost an iconic community fixture, an elm tree that ...

The North Carolina Forest Service has been receiving reports of scorched-looking elm trees throughout central North Carolina, from Davidson to Johnston counties. But Jim Slye, the service’s Forest ...

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COLORADO SPRINGS, Colo. — Crews were at work Friday helping preserve a historic tree near downtown Colorado Springs despite the snowy morning. Arborist company SavATree provided free pruning on the ...