Consultation on Ancymidol and Its Associated End-use Products, Proposed Re-evaluation Decision PRVD2021-10

Notice to the reader:

The online consultation is now closed.

Health Canada is consulting Canadians on the proposal to continue registration of ancymidol and all associated end-use products registered for sale and use in Canada, provided proposed updates to label directions are put in place.

As a result of the re-evaluation of ancymidol, these products were shown to have value as a plant growth regulator, used for height control of container-grown lilies, poinsettias and chrysanthemums. When the current label directions are followed, potential risks to human health (occupational, dietary, residential and bystander) and the environment (aquatic and terrestrial organisms and their habitats) are considered to be acceptable. However, label updates are proposed to meet the current labelling standards.

For a full list of products containing ancymidol, please consult Appendix I in the Proposed Re-evaluation Decision or visit the Pesticide Label Search database.

For more information on the proposed decision open the "Proposed Re-evaluation Decision".

How to Get Involved

This consultation is open for comment from 14 December 2021 to 14 March 2022 (90 calendar days).

To comment on PRVD2021-10:

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: PRVD2021-10, Ancymidol 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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