Emerald Ash Borer

The emerald ash borer is a highly destructive insect that was discovered in Canada for the first time in the summer of 2002. This invasive insect has killed millions of ash trees in Canada and the United States. It poses a major economic and environmental threat to urban and forested areas in both countries.

Ash Boer

Managing emerald ash borer

The majority of the ash trees on NCC lands have been affected by the emerald ash borer. To address this, the NCC is implementing its emerald ash borer management strategy, approved by our Board of Directors in January 2014.

Greenbelt and Gatineau Park

In the Greenbelt and Gatineau Park, the impact of emerald ash borer is minimal, because the ash trees are primarily in forested areas. For the most part, dead trees are left to decay and removals are undertaken when they pose a health and safety risk.

Urban lands

On our urban lands, we are removing more and more ash trees due to an increase in ash tree mortality.

Our strategy is as follows:

  • We remove trees that pose a health and safety risk to the users of green spaces on urban lands and properties. This includes trees located on or adjacent to rental and commercial properties, in or adjacent to urban parks, and along NCC pathway and parkway corridors. Other affected trees on urban lands will be removed more gradually.
  • Tree stump removals began in the summer of 2014.
  • We attempt to save trees in certain areas through an injection program.
  • Once major removal operations are completed, the NCC replants trees based on its replanting strategy.

Help limit the spread of the emerald ash borer

  • Do not move any firewood across any significant distance.
  • When camping or at a cottage, buy your firewood locally, and burn it all before you leave.
  • Report suspected emerald ash borer infestations or outbreaks to the Canadian Food Inspection Agency at 1-866-463-6017.

More information

Residents of the Capital Region can also find more information on these websites: