Rowan mountain ash, Sorbus aucuparia, is an attractive tree with a rounded canopy, white flowers, and bright orange to red fruit.

In cooler regions with low humidity, one native tree offers stunning blooms with edible fruit beloved by wildlife. Here's how ...

MaMA has so far identified more than 230 lingering ash trees. Most are from the Hudson Valley region, ground zero for the ...

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