Preparing for Emerald Ash Borer


Fredericton is well known for its tree canopy. It is made up of thousands of trees, from different species, found along city streets, in parks and green spaces, and on private properties.

The City of Fredericton employs professional Parks & Trees staff to manage the trees within its care. Property owners also take great pride and care in their own trees and shrubs.

Unfortunately, the City’s tree canopy is under threat from an insect called the Emerald Ash Borer (EAB). This tiny pest has been killing ash trees by the millions across North America since 2002.

City staff have been monitoring the situation since 2008. Fredericton City Council has asked staff to create a plan to minimize the impact. This year, 2020, the City increased its "sticky" traps from 35, in 2019, to 50; increased the number of ash trees treated with TreeAzin from 30, in 2019, to 80; and, along with the Maritime College of Forest of Technology, branch-sampled 150 ash trees.

Property owners have a role to play, as well.


Emerald Ash Borer

Credit: Marianne Prue, Ohio Department of Natural Resources - Division of Forestry,

Management Plan

Detect - While the Emerald Ash Borer has not been found in Fredericton, it has been detected in Oromocto and Edmundston, NB, and just outside Halifax, NS. City staff continues to work with provincial, federal, and private sector representatives to detect the insect’s arrival.

Treat - Some significant City trees will be identified for treatment. This is not a long term solution, however, and it is not available for all ash trees on City property due to the expensive nature of the treatment. Homeowners may choose to treat their ash trees.

Remove - Removal of Ash Trees will be necessary to control the rate of spread of the insect and minimize the risk to public safety. It is recognized that neighbourhoods with a large ash proportion will be impacted greatly.

Replant - The City’s plan calls for different tree species to be replanted once an ash tree has been removed. Staggered removal and replanting of trees, over several years, will result in the least impact on the City’s tree canopy.