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Insect Control

Tree Pest Caterpillar Spraying Schedule 2021

Tree Pest Caterpillar Control Program

Tree Pest Caterpillar treatment crews will only be treating selected streets within each IMA that have or are at risk of significant defoliation. Not all streets within an IMA will be treated.

IMAs to be sprayed will be announced at least 8 hours in advance of spraying operations.

The City of Winnipeg controls forest tent caterpillar and cankerworms on City-owned trees using the biological insecticide Foray® 48B (Foray® 48B Label / Foray® 48B SDS).

Citizens can register for notifications using the following link: Tree Pest Caterpillar Control Program Notification

Spraying Schedule:

  • Program has Concluded for 2021
Areas to be treated Areas to be treated  
Areas previously treated Areas previously treated  





Click areas to zoom

Cankerworm Control Program Map
Tree Pest Caterpillar Control Program

  • Start Date: May 23, 2021
  • End Date: June 24, 2021

Previous Treatment Dates:

  • May 23, 2021 - IMA 7
  • May 25, 2021 - Weather Delay
  • May 26, 2021 - IMA 7
  • May 27, 2021 - IMA 7 and 8
  • May 28, 2021 - Weather Delay
  • May 30, 2021 - IMA 8
  • May 31, 2021 - IMA 8 and 6
  • June 1, 2021 - IMA 6 and 33
  • June 2, 2021 - IMA 33
  • June 3, 2021 - IMA 33 and 19
  • June 4, 2021 - IMA 33 and 41
  • June 6, 2021 - IMA 41
  • June 7, 2021 - IMA 41 and 31
  • June 8, 2021 - IMA 31
  • June 9, 2021 - IMA 31
  • June 10, 2021 - Weather Delay
  • June 11, 2021 - Weather Delay
  • June 13, 2021 - IMA 31 and 3
  • June 14, 2021 - IMA 3
  • June 15, 2021 - IMA 3
  • June 16, 2021 - Weather Delay
  • June 17, 2021 - Weather Delay
  • June 18, 2021 - IMA 32 and St Vital Park
  • June 20, 2021 - IMA 32
  • June 21, 2021 - IMA 32
  • June 22, 2021 - IMA 32 and 13
  • June 23, 2021 - IMA 13 and 21
  • Tree Pest Caterpillar Program Archives

    2019 | 2020


    Last update: June 24, 2021
Contact Us
Bugline: 311
or 1-877-311-4WPG
Media inquiries: 204-986-6000
311@Winnipeg.ca

Administrative Office and Research Laboratory
1539 Waverley Street
Winnipeg MB R3T 4V7

Operations Base
3 Grey Street
Winnipeg MB R2L 1V2
Citizens' Information Service
Search by address
to find out your insect management area.

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