Consultation on Cyromazine and Its Associated End-use Products, Proposed Re‑evaluation Decision PRVD2020-02

Notice to the reader:

The online consultation is now closed.

Health Canada is consulting Canadians on the proposal to cancel several uses of the pesticide cyromazine in Canada, and add risk mitigation measures to other uses, to further protect the health of Canadians working with the pesticide as well as the environment.

Cyromazine is a systemic insecticide and insect growth regulator that is currently registered for commercial use to control pests on a variety of crops. Currently registered products containing cyromazine can be found in Pesticide Label Search results.

With respect to human health, risks due to occupational exposure have not been shown to be acceptable for the following uses of cyromazine, which are proposed for cancellation:

Mitigation measures are required for all remaining uses: mushrooms, imported green onion seeds, and outdoor ornamentals not grown for cut flowers. To mitigate potential environmental risks to non-target organisms, spray buffer zones to protect sensitive aquatic and terrestrial habitats from spray drift and precautionary label statements to inform users of potential risks to the environment are required.

For more information on the proposed decision, including product cancellations or risk mitigation measures to further protect human health and the environment, open the “Proposed Re-evaluation Decision”.

How to get involved

This consultation is open for comment from from 5 February 2020 to 5 May 2020 (90 calendar days).

To comment on PRVD2020-02:

Step 1

Request the full consultation document to read the Science Evaluation that is the basis of this proposed regulatory decision.

Step 2

Submit comments to the PMRA Publications Section.

All comments received will be considered. A final re-evaluation decision will consider additional scientific information provided during the public comment period.

Please refer to the document title (for example: PRVD2020-02, Cyromazine and Its Associated End-use Products) when providing comments.

Reporting to Canadians

Health Canada will make the results of this consultation available on this website. Once the decision is finalized, the PMRA will post a Re-evaluation Decision on the Pesticides and Pest Management Reports and Publications portion of

If you have any questions, contact the Pest Management Information Service.

Interested in our other consultations? Sign up and stay informed about topics that matter to you.

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