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 ...

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

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 2 ...

An elm tree said to have shaded George Washington as he took command of the Continental Army in Cambridge, Mass., in 1775 has a new descendent in Loveland. On Monday, members of the Namaqua Chapter, ...

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 ...

Pests are ravaging keystone species like ash, elm, and beech. But researchers are breeding the survivors into more resilient populations. Port Orford cedar trees in Redwood National Park that were ...