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Insect Control

Tree Pest Caterpillar Spraying Schedule 2023

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: May 31, 2023 - IMAs 21 (Fort Richmond) and 38 (Deer Lodge)

Areas to be treated Areas to be treated  
Areas previously treated Areas previously treated  

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Cankerworm Control Program Map

Tree Pest Caterpillar Control Program

  • Start Date: May 28, 2023
  • End Date:

Previous Treatment Dates:

  • May 30, 2023 - IMA 30 and 21
  • May 29, 2023 - IMA 30 and 21
  • May 28, 2023 - IMA 30

Tree Pest Caterpillar Program Archives

2021 | 2022

Last update: May 31, 2023
Contact Us
or 1-877-311-4WPG
Media inquiries: 204-986-6000

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

Operations Base
3 Grey Street
Winnipeg MB R2L 1V2
Citizens' Information Service
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