Colorado Adds 7 Products to List of Pesticides That Can Be Used on Cannabis

The products can now be used on cannabis without violating the Pesticide Applicators' Act.


PRESS RELEASE - The list for pesticides that can be used on cannabis without being a violation of the Pesticide Applicators' Act has been updated. Please note the following products have been added:

  • PureAg PM
  • BioSafe Weed & Grass Killer
  • BT Now
  • BioSafe Disease Control RTU
  • Eco-1 40
  • Harris *Since 1922* 20% Vinegar Weed Killer

To view the updated list, click here for a pdf or click here for an Excel form. For questions regarding this change, contact Laura Quakenbush at (303) 869-9060 or email

The Colorado Department of Agriculture (CDA) is currently reviewing pesticide labels upon request and maintaining a list of products whose label it has reviewed that it believes could be used on marijuana without violating 35-10-117(1)(i), as long as the applicator follows the label directions.

Please be sure to review the list; pesticide products may be removed from the allowed products list if the registrant has not renewed their pesticide product with the department. Use of unregistered pesticides on cannabis would be a violation of the Pesticide Applicators' Act.

Stay Informed

For the latest information on CDA's Pesticides Program, visit: these important webpages: