Emerald Ash Borer Treatments

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

  • Emerald Ash Borer Treatments
  • Emerald Ash Borer Treatments
  • Emerald Ash Borer Treatments
  • Emerald Ash Borer Treatments

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 here for more information about this highly effective treatment system.

what our clients say

  • Have used this company for decades. They are the best - courteous staff, professional work and very reasonable prices for all that they do.

    Phyllis Kingsley

    CTS has been my go-to "Tree Team" for over 4 years . - Outstanding customer service! - Friendly and knowledgeable staff! - Fast and thorough cleanup! - Industry leading certifications!... read more

    Jim Chapel

    Top notch crew, very knowledgeable and left the place clean and tidy.

    Chris Vagg
  • The ladies in the office were super friendly and informative. The crew were exceptional. I thoroughly enjoyed my experience with this company - the clean up was above par and... read more


    We have had the pleasure of working with CTS for many years and have found the teams to be professional, courteous and accommodating.

    Michelle Braga

    Nothing To Bark At. All good, they know TREES

    Brian P
  • excellent professional service at a reasonable price

    Nancy Hughes

    I have nothing but good things to say about my dealings with Colonial over the years. We have a few trees on our property and I've had them out... read more

    Heather Green

    Called on this company a few times over the years! Great crew that work very hard! Will be calling on them again soon! Thanks!

    Steven Little
  • Looks like these guys were contracted to deal with the stumps left over from all the ash trees that had to be cut down in Mississauga, at least on my... read more


    Great service from start to finish!

    michelle lemme

The #1 Tree Service in Halton Region

We provide professional tree care services in various locations.

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

Request a Free Consultation