Oak trees change their fine roots and "energize" soil microbes by supplying them with a cocktail of small organic compounds, ...

White oaks (Quercus alba) are durable, large canopied, long-lived trees that grow slowly and are common in southern Wisconsin ...

An innocuous-looking mushroom with a sweet smell and a sinister name lay at the centre of Australian Erin Patterson's ...

Have you noticed discoloration on your maple tree leaves this year? You aren't the only one. Here's what you should know ...

Ever been walking around outside and stumbled across a tree that has a mysterious black bag waving from its branches? No, this isn't a piece of litter that got blown away -- in fact, it's a good sign ...

One of Nebraska's oldest trees, a bur oak estimated to be more than 380 years old, has died.

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

Want to know what's ailing nearby trees? This index of common tree diseases and pathogens can help you identify and prevent further decay.

Oak wilt is one of the most impactful tree diseases nationally, and is particularly destructive here in Central Texas, according to the Texas A&M Forest Service.

Known as leafy jelly fungus or amber jelly roll (Exidia), it grows on the dead branches of deciduous trees. I find it on the downed branches of a dead oak on the forest floor.

A deadly new oak-tree disease can be prevented by pruning them in the dormant season (if needed) instead of spring or summer.