Identification Tips: Ash trees have no nuts but clusters of slender seeds with a long wing. There will be no nut husks under the tree. Check for an opposite leaf arrangement to eliminate hickory ...

On ash trees, the buds, leaves, and sometimes twigs may become infected. In early spring, infection of buds or expanding leaves results in irregular brown blotches and distortion of leaflets.

DNA sequencing shows young trees are more likely to have gene variants that confer partial resistance to a fungus that has ...

Ash trees are fighting back against a disease that has ravaged the British countryside, new scientific evidence shows. When ...

The emerald ash borer eats into the bark of ash trees and leaves D-shaped ... Department of Agriculture explains the distinctive leaf pattern of of an ash tree, which can help with identification.