The genus Fraxinus contains 45-65 species worldwide. Green and white ash trees are the two most common ash species and their range covers most of the Eastern United States and Canada. Other ...

Two more recent invasive species are wreaking havoc on two key trees in upstate New York: the eastern hemlock and the white ash. The hemlock woolly adelgid first came to the East Coast from Japan ...

In the late summer, female beetles lay their eggs into the bark of ash trees. Larvae burrow through the winter, feeding on the bark and disrupting the flow of the tree’s nutrients. White ash ...

MARTINEZ, Calif. (KGO) -- A flare-up over the Thanksgiving holiday weekend at an East Bay refinery sent thick white ash raining down on nearby neighborhoods. On Monday, that refinery is offering ...

"Emerald ash borer beetles target, and eventually kill, ash tree species of the green and white varieties including the 'autumn purple ash,' a popular white ash variety in Colorado," the city said.

The emerald ash borer has decimated ash trees in New York, which once comprised 7 percent of the biomass of the state’s forests. In a region of Ulster County stretching from Kingston up to ...

No ash is safe from this insect. All species are attacked, including green, black and white ash. Emerald ash borer attacks all sizes of trees from one-inch diameter to large, mature ash.