University of Missouri Extension has a free program to identify oak tree diseases affecting trees across Missouri. See how to ...

We love the vibrant colors of maple trees in the fall. These deciduous beauties bring not only great color but also a recognizable leaf shape and (our favorite) whirlybird seeds that helicopter their ...

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 ...

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 ...

Growing fruit trees comes with many perils. As well as the unpredictable weather, there is always the risk of pests nibbling your fruit and diseases that can harm trees and wreck harvests.

Don't panic if you see spots on your tree's leaves or something strange on the bark. Get to work diagnosing the problem with this guide that features pictures of common tree diseases and pests that ...

Half a century ago, summertime in Blue Hill was shaded by hundreds of American elm trees forming a canopy over its downtown streets. Though hundreds of them are gone now, victims of widespread disease ...

The California Department of Food and Agriculture declared a citrus quarantine in a 95-square-mile area of Rancho Bernardo on Tuesday after detecting a potentially threatening citrus tree disease ...

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 ...

Looking upward into the branches of a very large elm tree. - Alex Cristi /Getty Images Summertime shade might be the most obvious benefit trees provide, but they also improve air quality, cool the air ...

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 ...