Tree Pest Caterpillar Spraying Schedule 2023

Report insect concerns

Tree pest caterpillar (cankerworm) on public property

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: Tree Pest Caterpillar Program Concludes - June 15, 2023

Areas to be treated
Areas previously treated

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Cankerworm Control Program Map

Tree Pest Caterpillar Control Program

Start Date: May 28, 2023
End Date: June 14, 2023

Previous Treatment Dates:

June 14, 2023 - IMA 21
June 13, 2023 - IMA 21
June 7, 2023 - IMA 21
June 6, 2023 - IMA 21
June 5, 2023 - IMA 38
June 4, 2023 - IMA 38
June 1, 2023 - IMA 21
May 31, 2023 - IMA 21
May 30, 2023 - IMA 30 and 21
May 29, 2023 - IMA 30 and 21
May 28, 2023 - IMA 30

Last update: January 8, 2024

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Media inquiries: 204-986-6000
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Administrative Office and Research Laboratory
1539 Waverley Street
Winnipeg MB R3T 4V7

Operations Base
3 Grey Street
Winnipeg MB R2L 1V2

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