Managing Emerald Ash Borer (EAB) has been a challenge for the City of Mississauga and many other cities across the Greater Toronto Area. It has infested and killed Ash trees in Ontario, Quebec and throughout the United States. EAB was first detected in 2008 and by 2012 was confirmed in all wards within the City.
Of the more than 2.1 million public and private trees in Mississauga, it is estimated that 10% are Ash trees. As EAB continues to spread throughout Mississauga, the number of dead or dying Ash trees continues to increase. There is a growing safety issue with the potential for falling branches, limbs and trees, especially during wind and other storms. In 2012, Council approved the EAB Active Management Plan.
Through this plan, the City will treat the healthy City-owned Ash trees with the hope of saving a number of Ash trees on our streets and in our parks. The City will also be removing and replacing dead or dying City-owned Ash trees. The City’s Active Management does not include resources to treat or remove private Ash trees. It is the property owner’s responsibility to treat or remove dead or dying Ash trees on your property. If your EAB infested Ash tree is located in a yard, along a street or a fence, it may pose a safety risk and should be removed. Safety is most important when determining when to remove your dead or dying Ash tree. Contact an International Society of Arboriculture (ISA) certified Arborist to advise you on the condition of your Ash tree.
If you have three or more dead, dying or hazardous trees over 15 cm (6 in) in diameter you will need to comply with the Private Tree By-law. For Ash trees ONLY, a certified arborist can sign off on the application form to confirm that the Ash trees are dead or dying due to EAB.
This will help to streamline the application approval process for Ash trees. As with any dead or dying tree there will be no fee required. The Forestry section recommends you contact an ISA certified arborist to remove the tree. To learn more about EAB, visit our website: mississauga.ca/eab for EAB updates.
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