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Tree cutting
Colonial Tree Team administering treatment
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Tree receiving treatment
Colonial Tree Owner

The Emerald Ash Borer is an invasive species highly distructive to ash trees.

Female EABs lay eggs on the bark of the tree, often between bark layers and in crevices.

Newly hatched larvae bore through the bark into the tree, feeding under the tree's bark, and disrupting the flow of water and nutrients within the tree.

In the spring, adult EABs chew D-shaped exit holes through the bark and emerge from the tree, capable of flight and infesting other trees.

The Emerald Asher Borer has effected millions of trees across southwestern Ontario, including Toronto and the GTA.

If you notice any of the following signs or symptoms, your tree could be infected with EAB:

  • Premature yellowing of leaves
  • Dead branches Cracks in the tree bark
  • Thinning of the crown
  • Epicormic shoots
  • Woodpecker and squirrel feeding sites
  • D-shaped beetle exit holes
  • Feeding notch in the leaf

If you think your ash tree could be infected with the EAB, contact Colonial Tree service for an expert evaluation of the health of your ash tree. Colonial Tree Service provides the newest technology to protect your ash trees from the harmful effects of the EAB.

Colonial Tree Service uses TreeAzin Systemic Insecticide Treatment System to treat Emerald Asher Borer.

Please click on the image below for more information about this highly effective treatment system.

Tree Azin Emerald Ash Borer Treatment Brochure

Service Area

Halton, Peel, Caledon, GTA, Wellington, Dufferin, York, London Middlesex

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