Pesticide and Fertilizer Use for the Production of Marijuana in Washington
Inclusion on the list is not an endorsement or a recommendation regarding the use of any specific pesticide for the production of marijuana in Washington.
The list only includes registered pesticides that are allowable for use in marijuana production as defined by the above criteria. The list has been provided to the Washington State Liquor and Cannabis Board and the Washington State Department of Health, and will be updated by WSDA as needed.
- From the "Pesticide Information Center Online (PICOL) Databases" web page, click on the "Registered Labels” button.
- After the "PICOL Simple Search” web page appears, select "I-502/I-692 (WA only)” in the "Item to Search on” drop down menu, choose "EQ” in the "Operator” drop down menu, choose "Yes” in the "Common Name” drop down menu, and then click on the "Submit Query” button.
- When the "Search Results” web page appears, click on the "Format Labels” button.
- When the "Choose your output type” web page appears, click on the "View Labels” button. You can either view the list, or export it to Excel.
- Tutorials for using PICOL are available on YouTube.
Worker Protection Standard
- Notify their employees when pesticide applications occur.
- Ensure that employees have received training specific to their potential exposure to pesticides.
- Provide adequate protective equipment and decontamination facilities to employees exposed to pesticides.
- Monitor employees using highly toxic (Category I) pesticides.
- Facilitate medical treatment for any employee who exhibits signs of a pesticide poisoning.
Options for Training Workers
- Get a private applicator's license from the WSDA, and train your workers on WPS requirements.
- Attend a WPS Train-the-Trainer course and train your workers on WPS requirements.
- Have an appropriately licensed or trained individual do the worker training for you.
WSDA has developed guidance to help marijuana growers understand licensing requirements to apply pesticides on marijuana.
Chemigation & Fertigation Technical Assistance Program
- Chemigation is the use of an irrigation system to apply a pesticide or a system maintenance compound.
- Fertigation is the use of an irrigation system to apply commercial fertilizer, soil amendment, or reclaimed water from food processing and wastewater treatment facilities.
Waste Pesticide Disposal
For more information:
Fertilizers and Pesticides Placed on Statewide Stop-Sale Orders
Washington State Liquor and Cannabis Board
Washington State Department of Health
Washington State Department of Ecology
Washington State Department of Labor and Industries
Interagency Resource for Archieving Cooperation