Add Yahoo as a preferred source to see more of our stories on Google. A fungus that's deadly to butternut trees has been found on the Island, and there is no known cure. (Clay Cutting - image credit) ...

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 ...

A fungus called Mycosphaerella populorum has been infecting poplar trees across North America. Exactly how the fungus is so effective at infecting trees so rapidly and causing extensive damage has ...

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 ...

Could a fungus found in the Torrey Pines State Natural Reserve be deadly for Torrey pine trees in La Jolla Shores’ Kellogg Park? Representatives of California State Parks have noticed that trees at ...

Nature gives rise to fascinating adaptations, which can sometimes lead to organisms living in some strange situations. The relationship between bark beetles, spruce trees, and a type of fungus is a ...

PITTSBURGH — An invasive fungus is wreaking havoc on local oak trees. Oak wilt disease is fast-moving, killing some trees in less than a year. Local experts showed Channel 11′s Lisa Sylvester what to ...

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 ...