John Skinner, community forester, joined us to talk about the invasive emerald ash borer that kills ash trees.

In 2017, beech bark disease surfaced across most of ... “The ash borer is a death sentence for any ash tree. The leaf disease is not going to eliminate beech from the landscape,” he said.

The shining and dangerous pest is poised to wreak havoc on Edmonton’s $400-million population of ash trees, and the city has ...

Sooty bark disease comes from a fungus that has existed ... They have killed up to 99% of the ash trees in some North American locations. The emerald ash borer was discovered for the first time ...

Marc Wolf steps off a trail at the Mountaintop Arboretum to examine a beech tree with mottled, bumpy bark. “This is pretty typical of beech bark disease,” he said. “Beech trees would typically have a ...

As an insect from Asia, this beetle does not have native predators, parasites or diseases ... lays eggs on ash bark and its wormlike larvae burrow under the bark and feed on the trees’ vascular ...

Lucidus root and butt rot disease are one of the most common root and butt rots of hardwoods. It has a wide host range including oaks, maples, hackberry, ash ... or trunk rot. The tree, when ...

The larvae tunnel under bark, cutting off nutrients from the tree and killing ... said if action isn’t taken, ash canopies could follow the same path as dutch elm disease took in the 1970s.

This makes it more difficult to treat than visible insects like the emerald ash borer ... to the leaf disease. For almost a century, the trees have suffered from beech bark disease, a combination ...

As ash bark matures, it splits into diamond ... so is just delaying the inevitable. Even treated trees are expected to eventually succumb to disease or injury prematurely because of the stress ...

Michael Parisio, an entomologist in the Insect Disease Lab ... underneath the bark of a tree for about two years, creating an S-pattern of feeding galleries. The emerald ash borer is difficult ...