Emerald Ash Borer

This invasive insect kills all species of Ash trees native to North America. It’s been present in Mississauga since 2008 and is a threat to all Ash trees.

How to spot an infestation

Ash trees with an Emerald Ash Borer infestation can be identified by:

  • Reduced leaf coverage with bare outer branches
  • Small D-shaped holes where the insects exit the tree
  • Larger holes made by woodpeckers eating the beetles
  • Leaves growing near the base of the tree

To stop the beetle from spreading when infested wood is moved, the Canadian Government has set up regulated areas.

What to do with infested Ash trees

If you have an Ash tree on your property, you should have it inspected by a certified arborist. They can tell you if the tree is infested and how to protect or treat it.

Once a tree is infested, it will die quickly and can become a safety risk. If the tree is dead, or cannot be treated, you’ll need to have it removed from your property.

Wood and debris from Ash trees in regulated areas must be kept inside of the area to prevent the insects from spreading further.