Pesticides and PARC

For the purpose of pesticide regulation, the Oregon Department of Agriculture (ODA) considers cannabis grown in Oregon to be an agricultural crop.

​​Updates on pesticide products and cannabis

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​More information on cannabis and working with ODA​. As additional resources become available, they will be posted here. 

Guidelist for pesticides and cannabis (products allowed in production of cannabis)

The guidelist for pesticides and cannabis was updated May 25, 2017, and is sorted by active ingredient then product name. The intent of the list is to assist growers in distinguishing those pesticide products whose labels do not legally prohibit use on cannabis from those that clearly do not allow use. The list is not an endorsement or recommendation to use these products in the production of cannabis in Oregon. Do not hesitate to contact Pesticides staff with questions or for label clarification.​ ​​

Alert regarding the use of pyrethrins and/or piperonyl butoxide

  • Recent laboratory results show high levels of the active ingredients, pyrethrins and/or piperonyl butoxide in some cannabis samples. 

  • Both pyrethrins and piperonyl butoxide currently are on ODA's "Guidelist for Pesticides and Cannabis." 

  • ODA is investigating why some samples indicate levels of one or both of these pesticides, which far exceed the Oregon Health Authority (OHA) Action Levels, and yet others do not. 

  • To retain the listing of these two pesticides on the Guidelist, ODA, OHA, and Oregon Liquor Control Commission (OLCC) need to learn more about what influences pesticide residue levels on cannabis. If you used pyrethrins and/or piperonyl butoxide, and your cannabis tested below OHA’s Action level, please contact ODA at (503) 986-4553. ​

  • Find out the differences between pyrethrins and pyrethroids​

​Red flags in table below refer to the information above. 

​​​​Resources

Cannabis and pesticides: Letter to producers (November 2016)

Pesticide information for cannabis producers

Cannabis email subscription

Sign up to receive email when new information is available from ODA on cannabis. Subscribe

Guidelist for Pesticides and Cannabis

The guidelist was updated May 25, 2017, and is sorted by active ingredient then product name. The intent of the list is to assist growers in distinguishing those pesticide products whose labels do not legally prohibit use on cannabis from those that clearly do not allow use. The list is not an endorsement or recommendation to use these products in the production of cannabis in Oregon. Do not hesitate to contact Pesticides staff with questions or for label clarification. Pesticides and cannabis guidelist

Internal management directive (criteria)

Guidance to ODA staff on how to determine whether a pesticide may be used on cannabis and included on guidelist. Document

Licensing Requirements for Pesticide Applications to Cannabis

Document

Marijuana Production: Chemigation and Fertigation Practices

Information from the Washington State Department of Agriculture about applying pesticides and fertilizers through an irrigation system when growing marijuana either indoors, outdoors, or in a greenhouse. Details about practices

Request for info: Use of pyrethrins and/or piperonyl butoxide on cannabis (January 2017)

Request for info on use of pyrethrins and/or piperonyl butoxide

Contact

Pesticides Program
Phone: 503-986-4635
Fax: 503-986-4735
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