The Emergency Use Registration (EUR) for DeltaGard on box tree moth has been renewed for another year effective until June 23, 2024. This EUR only applies to commercial facilities in Ontario growing boxwood outdoors. Big thank you to the OMAFRA minor use coordinator Josh Mosiondz for renewing this for Ontario growers and CNLA for the support. An updated label can be found at the end of this post.

As a reminder, if you are preventing or managing box tree moth in a commercial setting, chemical control needs to be targeted at the larval stage of this pest (not the adults or pupae!)

Current stage of box tree moth as seen by landscape monitoring and pheromone traps indicates that pupae and adults are present. Our trapping network has just started catching adults in pheromone traps: adults will be mating and looking for suitable boxwood hosts to lay their eggs.

Growers are encouraged to have your BTM pheromone traps at your facilities to determine if the pest is present in your area. A reminder of what the adults look like so you can determine if they are in your traps:

Also a summary of the pests lifecycle and timing for chemical controls: