The LAST DATE to use any inventory you might have of the insecticide DELTAGARD SC for Box Tree Moth on commercial grown boxwood is next week: June 23, 2024. This product is no longer being produced by the manufacturer and therefore the EUR was not renewed.

The Pest Management Regulatory Agency (PRMA) has accepted an Emergency Use Registration request (EUR) for use of a new product called Suspend Polyzone (PCP No. 34599, a.i. deltamethrin) on Boxwood Shrubs for control of Boxwood (Boxtree) Moth in Ontario, Quebec, Prince Edward Island, and New Brunswick effective June 24, 2024, until June 23, 2025.

For those in Ontario, this REPLACES the 2023 EUR for Deltagard. The new label for Suspend Polyzone is attached below. This product is the same active ingredient as Deltagard and is best used at egg hatch and when larvae are small and actively feeding as a contact insecticide.

If you have questions about commercial product registrations in Ontario for box tree moth, please reach out to me by email. (cassie.russell@ontario.ca).