Emerald ash borer confirmed in Robertson County, Tennessee, threatens ash trees. Learn symptoms, prevention tips and how landowners can report infestations.

Not all trees drop their leaves in the fall. Even in the height of winter, a curious number of oak and beech trees refuse to ...

When we see strange-looking growths on our trees, our first instinct is to panic. Is there something wrong? Is it a disease?

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

Lichens survive in a very wide range of habitats worldwide. Amazingly, more than 400 species can be found in Maryland.

Hydrangeas are a fantastic choice to fill out any garden with pops of color all summer long. But figuring out the right time ...

As winter’s chill recedes and spring begins to emerge, many gardeners across North America find themselves assessing the damage inflicted by late-season freezes.

A two-part workshop on winter tree identification is scheduled for Feb. 12 and Feb. 14 at Spring Mill State Park. The ...

Sudden or severe cold temperature can cause trees to experience "frost crack." NPR's Scott Simon talks with Bill McNee of the ...

Existing algorithms can partially reconstruct the shape of a single tree from a clean point-cloud dataset acquired by laser-scanning technologies. Doing the same with forest data has proven far more ...

One activity I enjoy while standing next to a conifer is to rub my fingers across the needles, inhale the fragrance, and ...

Increasing heat and drought are putting our forests under stress. Researchers at the Swiss Federal Institute for Forest, Snow ...