European Gypsy Moth Spray Program

The European Gypsy Moth is a non-native defoliating insect that feeds on a variety of tree species found in the Greater Toronto Area (GTA) and throughout North America. The City of Toronto’s management program focuses on controlling outbreak levels of gypsy moth in areas with trees that are at risk of defoliation, typically oak dominant communities.  

There will be no aerial spraying by helicopter to control Gypsy Moth done by the City in the 2021 season.  Several private golf courses will be spraying by helicopter but this is not in co-ordination with the City.   Egg mass removal has been finished for this season and residents can see where this work was done and also where individual trees are scheduled for pesticide application  for this spring by visiting the Gypsy Moth Interactive Treatment Map for 2021.

To report Gypsy Moth caterpillar, moth or egg mass sightings, please use the Gypsy Moth Reporting Tool

Gypsy Moth reporting's can also be done by contacting 311.  Individual calls or reports will not be personally responded to but the information will be used to plan the Gypsy Moth egg mass survey  done in the fall.  Results from the fall survey will be used to determine the following years treatment plans.   

City website

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