Some trees and shrubs have a bad reputation for being susceptible to diseases: lilacs to powdery mildew, junipers to juniper ...

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 ...

A new invasive insect is emerging in Central Ohio, and state officials want to know if you see one. Elm zigzag sawfly adults were trapped in Delaware County the week of April 15, according to the Ohio ...

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 ...

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 and pockets of cities and towns, Dutch Elm Disease ...

Please provide your email address to receive an email when new articles are posted on . Oak and maple are the most common trees in North America. Dutch elm disease caused recent backlogs in extract ...

Across the West, government agencies have declared war on two familiar trees: the Siberian elm and the Russian olive. They’re labeled invasive, noxious and undesirable. Before we destroy them, we ...