Emerald ash borer adults emerge from trees in spring. After mating, the females each lay about 50 eggs in the bark crevices of ash trees. The eggs hatch and larvae mine just under the bark where ...

Learn about the Black Ash Tree (Fraxinus Nigra Marsh)—its characteristics, habitat, ecological importance, and tips for ...

beetles initially infest the upper portion of the tree within the canopy where evidence is very difficult to see. While the ash is vigorous, it responds by producing callus. This pushes the bark out ...

The Emerald Ash Borer was discovered in Boulder in 2013. This small beetle, which burrows under the bark of ash trees disrupting the flow of nutrients and water, is predicted to cause a 25 percent ...

Bark – Scaly on young trees; becoming similar to Fraxinus americana; ashy-gray; divided into shallow furrows shaped into diamond patterns. Native Americans commonly used green ash for bows and arrow ...