How do I know if I have an ash tree? All true ash trees (Fraxinus spp.) have the following characteristics: • Leaves are compound, which means multiple leaflets occur on a common stalk, and typically ...

With concern over the Emerald Ash Borer in South Dakota, you may be wondering how to identify an ash tree. Here’s a look at the leaves, branches and bark. Ash trees have compound leaves; they grow in ...

“Approximately 15 percent of the trees that make up Colorado’s urban forest are ash,” the Department of Agriculture said. “There are an estimated 98,000 in the city of Boulder alone. The Denver metro ...

NEW YORK — Five prominent species of ash tree in the eastern U.S. have been driven to the brink of extinction from years of lethal attack by a beetle, a scientific group says. Tens of millions of ...

Cornell is at the forefront of determining how "invisibility cloaks" and walls of protection may give ash trees hope of revival.

Naturally occurring compounds in ash leaves could be linked to susceptibility of individual trees to the fungal disease ash dieback (ADB). But selecting trees with lower levels of these compounds and ...

With concern over the Emerald Ash Borer in South Dakota, you may be wondering how to identify an ash tree. Here’s a look at the leaves, branches and bark. Ash trees have compound leaves; they grow in ...