Calendars & EVENTS

The initial spray window was set for April 25 to June 12, 2022; however, updated modelling available to the City has narrowed the spray dates to May 15 to June 12 between 5:00 a.m. and 7:30 a.m.

The spray will treat areas of Mississauga predicted to see severe leaf loss from caterpillar feedings. The area is roughly 2,100 hectares (5,189 acres) of private and public land in Wards 1, 2, 3, 5, 6, 7, 8, 9, 10 and 11.

Highly trained spray specialists contracted by the City will use a helicopter, with all activities monitored by the project team. All necessary safety precautions are taken to ensure minimal risk to the public and the applicators.

Leaf size, caterpillar size and weather conditions will determine exact spray dates. Applications can occur any day of the week, including weekends. Application is weather dependent and the proper wind conditions are needed. Ideal application conditions consist of:

• calm winds
• no precipitation within for 24 to 48 hours
• high humidity

Each area will be sprayed twice, with the applications done approximately 7-10 days apart.

The City will be monitoring conditions during the spray window and will provide confirmation of the spray dates 48 hours in advance. Spray dates can be cancelled if the conditions change.

A communication will be issued by the City to the public 48 hours before each treatment. Up-to-date information will be provided through various communications channels listed in the How can I stay informed? section below. When and where will the spray occur?