WASHINGTON: 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. 

WSDA has removed 2 pesticides that were placed on stop sale by the Oregon Department of Agriculture (ODA). The ODA reported that both pesticides contained active ingredients that were not disclosed on the label. 

WSDA recommends that marijuana growers not use any existing stocks of the 2 pesticides placed on stop sale by the ODA, until WSDA determines whether similar action is appropriate in Washington.

Removed – Placed on stop sale by ODA

1. AZAMAX, EPA Reg. No. 71908-1-81268
2. EVERGREEN PYRETHRUM CONCENTRATE, EPA Reg. No. 1021-2560

In addition, WSDA has added 43 pesticides to the list of allowable products, and has removed 24 pesticides because the registrations for their distribution in Washington were voluntarily cancelled, or because the labels were no longer consistent with WSDA criteria. 

Pesticides containing four new active ingredients (Acetic acid, D-Limonene, Isaria fumosorosea Strain FE 9901, Linseed oil) 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. Other pesticides include herbicides labeled for direct application to, and control of, unwanted plants (weeds). Remember to read and comply with all applicable label directions and precautions when using any pesticide.

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 24 pesticides that were removed from the list, but no new product can be purchased.

Added

1. 20% VINEGAR HERBICIDE FOR CONTROL OF WEEDS, EPA Reg. No. 85208-1-90394
2. AVENGER AG BURNDOWN HERBICIDE, EPA Reg. No. 82052-4
3. AVENGER AG OPTIMA, EPA Reg. No. 82052-4
4. AVIV, EPA Reg. No. 91473-1-86182
5. BONIDE ALL SEASONS HORTICULTURAL & DORMANT SPRAY OIL CONCENTRATE, EPA Reg. No. 4-80
6. BONIDE ALL SEASONS HORTICULTURAL & DORMANT SPRAY OIL READY TO SPRAY, EPA Reg. No. 4-80
7. DOKTOR DOOM FORMULA 420 3 IN 1 SPRAY, EPA Reg. No. 67702-4-72804
8. FINALSAN TOTAL VEGETATION KILLER, EPA Reg. No. 67702-8-87865
9. GARDEN FRIENDLY FUNGICIDE, EPA Reg. No. 70051-107-829
10. GARDEN SAFE BRAND INSECTICIDAL SOAP INSECT KILLER, EPA Reg. No. 67702-13-39609
11. GARDEN SAFE BRAND NEEM OIL EXTRACT CONCENTRATE, EPA Reg. No. 70051-2-39609
12. GARDEN SENTINEL BIOFUNGICIDE, EPA Reg. No. 70051-107-56872
13. GRANDEVO CG, EPA Reg. No. 84059-27
14. MONTEREY HORTICULTURAL OIL RTU, EPA Reg. No. 6218-78-54705
15. NATRIA NEEM OIL READY-TO-USE, EPA Reg. No. 70051-13-92564
16. NATURAL GUARD BRAND BY FERTI-LOME HORTICULTURAL OIL READY TO SPRAY, EPA Reg. No. 67702-4-7401
17. NATURAL GUARD BRAND BY FERTI-LOME HORTICULTURAL OIL, EPA Reg. No. 67702-4-7401
18. NOFLY WP, EPA Reg. No. 88664-1
19. ORGANOCIDE ORGANIC FUNGICIDE, EPA Reg. No. 70870-3-70179
20. PREFENCE BIOFUNGICIDE, EPA Reg. No. 64137-5-68539
21. PRO-MIX MP BIOFUNGICIDE + MYCORRHIZAE, EPA Reg. No. 74267-8
22. QUIK-FIRE, EPA Reg. No. 67702-8-17545
23. REGALIA CG BIOFUNGICIDE, EPA Reg. No. 84059-3
24. REVITALIZE BIOFUNGICIDE CONCENTRATE, EPA Reg. No. 70051-107-4
25. SUMMIT B.T.I. GRANULES, EPA Reg. No. 6218-86
26. VENERATE CG, EPA Reg. No. 84059-14
27. VINAGREEN, EPA Reg. No. 85208-1
28. VINAGREEN, EPA Reg. No. 85208-1-73015
29. ALL NATURAL SLUG & SNAIL SPRAY RTU, WA Reg. No. 54705-17002
30. ECO-1 GARDEN SPRAY, WA Reg. No. 74578-17001
31. ECO-1 GARDEN SPRAY CONCENTRATE, WA Reg. No. 74578-17002
32. FLYING SKULL NUKE EM INSECTICIDE & FUNGICIDE, WA Reg. No. 997940-17001
33. INSTANT MITE KILLER PROFESSIONAL CONCENTRATE, WA Reg. No. 996880-16002
34. INSTANT MITE KILLER READY TO USE, WA Reg. No. 996880-16001
35. MAGGIE’S FARM SIMPLY EFFECTIVE 3-IN-1 GARDEN SPRAY, WA Reg. No. 73079-18005
36. NEMATODE CONTROL, WA Reg. No. 89943-13001
37. ORGANOCIDE BEE SAFE 3-IN-1 GARDEN SPRAY CONCENTRATE, WA Reg. No. 70179-18001
38. ORGANOCIDE BEE SAFE 3-IN-1 GARDEN SPRAY, WA Reg. No. 70179-18002
39. ORGANOCIDE BEE SAFE INSECT KILLER CONCENTRATE, WA Reg. No. 70179-18003
40. ORGANOCIDE BEE SAFE INSECT KILLER, WA Reg. No. 70179-18004
41. PURE 3-WAY, WA Reg. No. 998220-13002
42. PURE 3-WAY COMMERCIAL, WA Reg. No. 998220-16002
43. STOP BUGGING ME! NEMATODE CONTROL READY-TO-USE, WA Reg. No. 58300-17004

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

1. 1600 X-CLUDE FORMULA 2, EPA Reg. No. 499-539
2. CULBAC GREEN, EPA Reg. No. 59588-1
3. FUNGI-PHITE, EPA Reg. No. 83472-1
4. GARDEN SAFE BRAND INSECTICIDE CONCENTRATE FOR DORMANT USE, EPA Reg. No. 67702-4-39609
5. GREENCURE, EPA Reg. No. 70870-1
6. MILSTOP BROAD SPECTRUM FOLIAR FUNGICIDE, EPA Reg. No. 70870-1-68539
7. ORTHO DISEASE B GON COPPER FUNGICIDE READY-TO-USE, EPA Reg. No. 67702-1-239
8. PLASMA NEEM OIL EC, EPA Reg. No. 84185-5
9. PRENTOX PYRONYL CROP SPRAY, EPA Reg. No. 655-489
10. PRESCRIPTION TREATMENT PYRETHRUM TR MICRO TOTAL RELEASE INSECTICIDE, EPA Reg. No. 499-479
11. PRO-MIX BX WITH BIOFUNGICIDE, EPA Reg. No. 74267-1
12. TYGRO INSECT FOGGER I, EPA Reg. No. 499-547
13. ELEMONATEM, WA Reg. No. 999860-16001
14. FLAT LINE, WA Reg. No. 996920-16001

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: