The Emerald Ash Borer is a beetle that lives in oak trees and lays eggs in on on the bark. When hatched, the larvae tunnel under the bark, and cut off the supply of nutrients to the tree.
In the City of Burlington, our Ash Tree population is in danger of dying. The City is treating all large city ash trees with insecticide.
HOW DO YOU KNOW IF YOUR TREE IS INFECTED?
Signs of Emerald Ash Borer Infestation include:
The leaves in the top third of the ash tree lose their green colour, thin and die back.
New branches begin to grow from the low trunk or roots.
White lines or canals are evident under the tree's bark.
The bark begins to split.
There are small D-shaped holes in the bark.
Increased woodpecker activity on the tree resulting in large holes
(from City of Burlington website)
If you see the signs of infestation, contact a tree specialist to advise you of treatment options.