Pesticide Use in Cannabis Production Information
The Colorado Pesticide Applicator Act prohibits use of a pesticide in a manner inconsistent with the product labeling:
35-10-117(1)(i)C.R.S.: unless otherwise authorized by law, it is unlawful and a violation of this article for any person to use, store or dispose of pesticides, pesticide containers, rinsates, or other related materials, or to supervise or recommend such acts, in a manner inconsistent with labeling directions or requirements, unless otherwise provided by law, or in an unsafe, negligent, or fraudulent manner.
Pesticide Applicators' Act Rules Associated with the User of Pesticides in the Production of Cannabis
Effective March 30, 2016
The Colorado Department of Agriculture has adopted Rules that set forth the criteria by which pesticides are allowed for use in the cultivation of Cannabis in Colorado. These Rules are effective March 30, 2016. The two links below provide the factual and policy basis for the Rules and the Rule language itself.
- Factual and policy issues related to the use of pesticides on Cannabis
- Pesticide Applicators' Act Rule for the user of pesticides in the production of Cannabis
Governor's Executive Order D 2015-015
The Governor issued Executive Order D 2015-015 on November 12, 2015, directing Colorado state agencies to address threats to public safety posed by marijuana contaminated by pesticides. See the links below to read the Governor's directive.
Pesticides Allowed for Use on Cannabis
The list developed by CDA is intended to assist Colorado Cannabis growers in identifying which pesticides can be used legally in accordance with the Pesticide Applicators' Act and its Rules in the production of Cannabis (marijuana and industrial hemp), it is not an endorsement or recommendation to use these products in the production of Cannabis in Colorado. These products have not been tested to determine their health effects if used on Cannabis that will be consumed and thus the health risks to consumers is unknown. by including products on this list, therefore, CDA make no assurances of their safety or effectiveness when used on Cannabis and is not responsible or liable for any such use.
To view or download the current list, click the link below:
- Pesticides allowed for use in Cannabis production in accordance with the PAA Rule: Effective May 15th, 2017
- This link provides a list of products that have been removed from the list of pesticides that may be used on Cannabis. These products were either removed from the list prior to the effective date of the rule or were removed as a result of them not meeting the rule criteria as of August 4th, 2016.
- Selected Examples of pesticides that cannot be used in marijuana production January 13, 2016
Products added since the last update are now highlighted in red on the PDF version of the file. The Excel version has the date that each product was added and can be sorted or filtered by name, date, active ingredient, etc.
We are currently reviewing pesticide labels upon request and maintaining a list of products whose labels we have reviewed that can be used on Cannabis without violating Part 17 of the PAA Rules, as long as the applicator follows the label directions. If you have products that you wish to have CDA review, please send the information (email preferred) to:
Michele Barton at email@example.com or 303-869-9061
For media inquiries, please contact Christi Lightcap: Christi.Lightcap@state.co.us or 303-869-9005
Under the authority of §24(c) of FIFRA, states may register an additional use of a federally registered pesticide product, or a new end use product to meet special local needs. EPA reviews these registrations and may disapprove the state registration if, among other things, the use is not covered by necessary tolerances, or the use has been previously denied, disapproved, suspended or canceled by the Administrator, or voluntarily canceled subsequent to a notice concerning health or environmental concerns.
Additional pesticide uses may be obtained under certain circumstances under Section 24(c) of FIFRA for the cultivation of Cannabis. These are referred to as Special Local Need Registrations. See the following documents for more information:
- EPA Statement on Pesticide Use on Marijuana
- EPA letter to CDA SLN's for Marijuana
- CDA letter to Marijuana stakeholders - SLN's for Marijuana
- 24(c) Criteria
- SLN checklist - Cannabis
- SLN guidance Colorado
- Cannabis and Pesticide use
Federal Worker Protection Standards
If you are a commercial Cannabis producer, are you aware of the requirements of the Federal Pesticide Worker Protection Standard (WPS)? This includes many specific requirements that producers of any agriculture commodity (including Cannabis) must comply with if they have people working in an area where plants have been treated with pesticides or who mix or apply pesticides. If you would like further information on these requirements, please contact Mike Rigirozzi at 303-869-9059 or firstname.lastname@example.org and he can set up a meeting to discuss these requirements.
We have training videos on that topic below: