The emerald ash borer is an invasive beetle wreaking havoc on America's ash trees. We explain how it got here and how it is ...

Research entomologist Jian Duan cuts away bark from ash trees in search of emerald ash borers, an invasive species that has been killing off the trees. They’re looking particularly for those affected ...

I wouldn't describe myself as a tree-hugger, in the truest sense of the word, but I do love trees. The same can be said for a great many people. I remember in the 1980s when Dutch elm disease was ...

How tall will a tree grow in 23 years? That’s a very specific question. A lot of factors go into figuring out the answer.

Research Entomologist Jian Duan cuts away bark from ash trees in search of emerald ash borers, an invasive species that has been killing off the trees. They're looking particularly for those affected ...

The large ash tree in our backyard has clearly had problems for years. One large limb died a few years ago, and the crown has been ever-thinner each year. This fall, however, seemingly overnight, a ...

A decade after ash dieback was found in the UK, there is still a real threat of importing other diseases with a “similarly devastating” impact, conservationists warn. The disease, which causes leaf ...

A new bug that can kill that ash tree in the front yard in just a couple of years has been discovered in Louisiana. On Wednesday, the Louisiana Department of Agriculture and Forestry reported that the ...