Bye, bye, green ash; it’s only a matter of time. The stately ash and its related tree species, black, white and blue ash are presently being wiped out in Ontario and the eastern states. The ...

Although ash trees are not native to much of Alberta and British Columbia, non-native trees have been planted in many cities across Canada, creating a lush urban canopy that is now under threat.

The eggs hatch into white larvae that burrow beneath the ash tree bark and feed in tunnels under the bark. This interrupts the flow of nutrients and water in the tree, causing death within two to ...

A green ribbon reading “Ash Tree at Risk” is tied around an ash tree. (File) “Black ash is extremely vulnerable to emerald ash borers, more so than any other ash species,” McCullough said.

The Emerald Ash Borer, an invasive species of bark beetle that was discovered in Colorado in 2013 and has been expanding through the state, has the potential to damage the Colorado landscape. And ...

The eggs hatch into white larvae that burrow beneath the ash tree bark and feed in tunnels under the bark. This interrupts the flow of nutrients and water in the tree, causing death within two to ...