Diseases are among the major causes of tree mortality in both forests and urban areas. New diseases are continually being introduced, and pathogens are continually jumping to new hosts, threatening ...

Add Yahoo as a preferred source to see more of our stories on Google. U.S. Army Corps of Engineers Forester Andy Meier inspects an elm tree on the Mississippi River for possible signs of Dutch elm ...

The Milton Keynes Parks Trust is removing diseased ash trees that could be unsafe.

Pine wilt disease has been confirmed in trees in southeastern North Dakota. Forestry officials talked with us about the ...

The arrival of new plant pests and diseases is likely to severely damage UK trees and woodlands in the coming decades, new research shows. The ash dieback epidemic prompted the government to assess ...

A new study found differences at the cellular level of leaves from infected Beech trees -- variations that may account for tree mortality. Beech trees provide food for animals, timber for wood ...

Global trade, tourism and other forms of human movement are accelerating the spread of tree and plant pathogens between continents. Dutch elm disease, first seen in Europe in 1910, was detected in ...

Cool, wet springs in recent years have contributed to the prevalence of a common tree disease called anthracnose. That weather pattern was prevalent much of this spring. Anthracnose is a general name ...

Elm trees make up about a quarter of Saskatoon's urban forest, so the disease poses a "significant risk to the city's tree ...

The arrival of new plant pests and diseases is likely to severely damage UK trees and woodlands in the coming decades, new research shows. The arrival of new plant pests and diseases is likely to ...

A leaf from a tree in West Rock Ridge State Park in New Haven shows symptoms of infection from Beech Leaf Disease. Beech trees provide food for animals, timber for wood products, and sustenance for ...