Alabama's ash trees are under attack. A fast-spreading insect known as the Emerald Ash Borer (EAB) has reached Jefferson and Madison counties after being documented in four other Alabama counties.

The emerald ash borer, a tiny yet destructive invasive beetle known for wiping out ash trees on a large scale, has been confirmed at six new locations in northwest Oregon. First discovered in Forest ...

With their wide-spreading, leafy branches, ash trees are quite popular in the U.S., but they're being seriously threatened by ...

An invasive, tree-killing pest has made its way to Portland, spelling trouble for the many ash trees that cool residential neighborhoods on hot summer days. On Wednesday, Oregon forestry officials ...

England's coveted Tree of the Year award, on which GNN reports yearly, was won this year by a Scottish ash tree 75 feet-tall.