To: Marijuana Industry Members

The Washington State Department of Agriculture (WSDA) has recently updated the list of pesticides that are allowed for use in marijuana production in Washington State, based on criteria previously established by WSDA. In addition, WSDA has recently updated the criteria to clarify the allowable post-harvest uses of pesticides in marijuana production.

The WSDA has added 19 pesticides to the list of allowable products, and has removed 17 pesticides because the registrations for their distribution in Washington were voluntarily cancelled, or because the labels were no longer consistent with WSDA criteria.

Please check your stock of pesticides against the list to ensure that you are using an allowed product. Marijuana growers can continue to use any existing stocks of the 17 pesticides that were removed from the list, but no new product can be purchased.

Pesticides containing 3 new active ingredients [Capric (decanoic) acid, Caprylic (octanoic) acid, Sodium tetraborate decahydrate] were added to the list. Most of the pesticides that were added to the list contain active ingredients that were already allowed for use in marijuana production.

Some pesticides are labeled for application to soil or to crop plants, while some pesticides are labeled for application to both soil and crop plants (e.g., insecticides, fungicides). Other pesticides include herbicides labeled for direct application to, and control of, unwanted plants (i.e., weeds). Remember to read, understand, and comply with all applicable label directions and precautions when using any pesticide.

Added

  1. AG DE-CIDE, EPA Reg. No. 7655-1-71074
  2. DESPOT SNAIL & SLUG BAIT, EPA Reg. No. 67702-33-7001
  3. ESPOMA INSECT!, EPA Reg. No. 67702-35-83598
  4. ESPOMA ORGANIC BRAND INSECT CONTROL, EPA Reg. No. 67702-35-83598
  5. ESPOMA ORGANIC BRAND INSECT SOAP, EPA Reg. No. 67702-21-83598
  6. FINALSAN HERBICIDAL SOAP, EPA Reg. No. 67702-8
  7. GRANADA 5, EPA Reg. No. 81803-6-93161
  8. GREEN GOBBLER 20% VINEGAR WEED KILLER, EPA Reg. No. 85208-1-93489
  9. HOMEPLATE, EPA Reg. No. 67702-54
  10. MERUS 3.0, EPA Reg. No. 8329-108
  11. PREV-AM, EPA Reg. No. 72662-3
  12. SAFER BRAND CATERPILLAR KILLER FOR TREES SHRUBS AND VEGETABLES CONCENTRATE II, EPA Reg. No. 70051-106-42697
  13. SLUG & SNAIL BAIT, EPA Reg. No. 67702-3-83598
  14. SUMMIT BIOLOGICAL CATERPILLAR & WEBWORM CONTROL, EPA Reg. No. 70051-106-6218
  15. THURICIDE BT CATERPILLAR CONTROL, EPA Reg. No. 70051-106-829
  16. SPIDER MITE CONTROL, WA Reg. No. 93752-18002
  17. SUPER SAFE ORGANIC INSECTICIDE & FUNGICIDE CONCENTRATE, WA Reg. No. 997940-17002
  18. TCC-IPM, WA Reg. No. 997020-18001
  19. TETRACURB ORGANIC, WA Reg. No. 8596-18001

 Removed – Voluntary cancellation, or label no longer consistent with WSDA criteria

  1. AGRI-FOS SYSTEMIC FUNGICIDE, EPA Reg. No. 71962-1-54705
  2. BAYER ADVANCED NATRIA DISEASE CONTROL READY-TO-USE, EPA Reg. No. 264-1154-72155
  3. BONIDE LIQUID COPPER FUNGICIDE CONCENTRATE, EPA Reg. No. 67702-2-4
  4. BONIDE LIQUID COPPER FUNGICIDE READY TO USE, EPA Reg. No. 67702-1-4
  5. CAMELOT O FUNGICIDE/BACTERICIDE, EPA Reg. No. 67702-2-67690
  6. CONCENTRATE WORRYFREE BRAND VEGOL YEAR-ROUND PESTICIDAL OIL FOR ORGANIC GARDENING, EPA Reg. No. 67702-4-33116
  7. CUEVA FUNGICIDE CONCENTRATE, EPA Reg. No. 67702-2-70051
  8. EARTH-TONE 3N1 DISEASE CONTROL, EPA Reg. No. 67702-15-83598
  9. EARTH-TONE INSECTICIDAL SOAP, EPA Reg. No. 67702-21-83598
  10. MONTEREY LIQUID COPPER FUNGICIDE RTU, EPA Reg. No. 67702-1-54705
  11. READY-TO-USE RO-PEL DEER & RABBIT REPELLENT, EPA Reg. No. 8119-8-1663
  12. READY-TO-USE WORRYFREE GARDEN INSECT CONTROL, EPA Reg. No. 67702-6-33116
  13. READY-TO-USE WORRYFREE INSECTICIDAL SOAP FOR ORGANIC GARDENING, EPA Reg. No. 67702-21-33116
  14. SERENADE OPTIMUM, EPA Reg. No. 264-1160
  15. BIOLINK INSECT REPELLANT, WA Reg. No. 51517-03002
  16. ECOLOGIC GARDEN INSECT KILLER READY-TO-USE, WA Reg. No. 72041-14004
  17. ECOLOGIC HOUSEPLANT & GARDEN INSECT KILLER, WA Reg. No. 72041-14002

You can find the complete list of pesticides that are allowed for use in marijuana production, the criteria WSDA used to establish the list, and information regarding stop sales in Washington on the WSDA web site:

agr.wa.gov/pestfert/pesticides/pesticideuseonmarijuana.aspx

Contact
For information regarding the registration of pesticides and fertilizers, please contact the WSDA Pesticide and Fertilizer Registration Section.

For information regarding how to comply with the pesticide label, please contact the WSDA Pesticide Compliance Program.

For any other questions, please contact your Liquor and Cannabis Board enforcement officer.