No, according to the Health Canada Pest Management Regulatory Agency (PMRA), the label must specify “greenhouse” if it is to be used on a greenhouse commodity. If “greenhouse” use is not specified on the agricultural chemical’s label, the agricultural chemical is intended for outdoor field-grown crops only. If an operation would like to apply an agricultural chemical to a product grown in a greenhouse, the product label must clearly indicate that the agricultural chemical is intended for use in greenhouses (e.g., greenhouse eggplant, greenhouse tomatoes).
Important note: the PMRA does not include “vertical farming” within their definition of a ‘greenhouse’. Currently, there are no agricultural chemicals in Canada that are currently registered for use in vertical farming operations. Although vertical farming is included in the scope of the CanadaGAP Greenhouse Product manual, vertical farming operations must not use agricultural chemicals that are registered for use in greenhouses.
The detailed factsheet from the PMRA can be found here: https://www.canada.ca/en/health-canada/services/consumer-product-safety/reports-publications/pesticides-pest-management/fact-sheets-other-resources/vertical-farming-pest-control-products.html.
A CanadaGAP Training note on this subject can be found here.