Emerald Ash Borer
Have you heard about Emerald Ash Borer?
Emerald Ash Borer, or EAB, is a non-native, highly destructive wood-boring beetle that feeds under the bark of ash trees. Emerald Ash Borer was confirmed in Arnprior in 2013 in a tree on McGonigal Street. All species of ash are susceptible to attack, except mountain ash, which is not a true ash species. Since it was first identified in Michigan in 2002, EAB has killed millions of ash trees in Ontario and many parts of the United States. It poses a major economic and environmental threat to urban and forested areas. Since the insect spends most of its lifecycle under the bark of trees, it can be easily moved with firewood or other tree materials such as nursery stock, logs, brush and larger wood chips. This insect is able to fly, but since its spread has been primarily along major highways and transport routes, it is clear that humans are the main vector of dispersal.
EAB normally has a one-year life cycle, but some can take up to two years to mature. EAB lays eggs on tree bark and in bark crevices starting in late May.
In its larva form, which resembles a caterpillar, Emerald Ash Borer feeds just under the bark of ash trees. This feeding disrupts the tree’s circulation of water and nutrients. The presence of even a few insects in a tree can kill it.
Top branches of ash trees usually die off first. A tree can lose half its branches in a single year. Once larvae finish feeding under the bark, they mature into adult beetles that chew their way out of the tree.
An Ash Tree Management Program for trees located on public property began in 2014 and continues to be implemented. For details of the program, including information on whether the tree in front of your house is scheduled for removal please click here.
Do you think you may have an ash tree on your property? Click here for more information on Ash Trees on Private Property.