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Beach Triangle Residents Association

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The Beach Triangle Residents Association, Toronto, Ontario

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Emerald Ash Borer Still Devastating Trees in Toronto

By Terra McKenna

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The Emerald Ash borer is still devastating trees within the Toronto area and was recently (February 2009) detected in Hamilton, ON. The best way to keep our Ash trees safe from this insect is to limit transportation and use of Ash species from wood packaging, nursery stock, firewood and raw wood materials.

Detection is very difficult because symptoms such as suckers on the trunk of the tree, cracking bark, D-shaped holes and thinning crowns can also occur naturally, without infestation. Furthermore, these results are usually not noticeable until two or more years of infestation.

In 2004, Toronto Urban Forestry issued a moratorium on the planting of Ash trees on city property. Information on regulated areas for the Emerald Ash Borer can be found on the CFIA website:

If you think that you may have an Ash tree that has been affected, please contact Canadian Food Inspection Agency at 1-866-463-6017.