In Washington State, the pesticides that may be applied to cannabis crops are limited to those approved by the WSLCB and the WSDA. The repository for data on these pesticides is the PICOL database. The PICOL database is a one stop shop to find out what active ingredients, brand names, and more, are ingredients in the various pesticides available.
Pesticide approval does not mean there is zero risk to your crops as a farmer. Not all active ingredients are created equal, and some can cause failure by increasing microbial counts and thus exceeding the currently allowed thresholds set by the WSLCB.
We have already seen examples of microbial failures caused by these types of products. The most recent example was a customer with a very clean history who started to fail micro. On investigation it was determined that they were storing their Neem Oil at too high a temperature. When we analysed the oil from the bottle, we found aerobic, fungal and bile colonies in abundance.
We’ve done the hard work for you, and below you can find a list of approved pesticides that use live microbes as their active ingredient. If you choose to use any of the compounds listed below, be sure to take precautions to prevent any viable bacteria from causing your crop to fail testing. Precautions include: making sure your soil doesn’t come into contact with your foliage during harvest; avoiding foliar spraying approaching and during flowering phases; ensuring that your foliar spray does not become contaminated with microbes; and shielding foliage if applying a liquid formulation to soil. Always ensure the directions on labels are followed.
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Ingredient |
Commercial Names |
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Bacillus Pumilus¸ Strain Gha 180 |
Pro-mix Biofungicide + Mycorrhizae [11, |
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Pro-mix Brk Biofungicide + Mycorrhizae [8 |
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Pro-mix Brk20 Biofungicide + Mycorrhizae [9 |
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Pro-mix Bx -general Purpose Growing Medium [6 |
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Pro-mix Hp -general Purpose Growing Medium [7 |
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Pro-mix Lp15 Biofungicide + Mycorrhizae [10 |
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Bacillus Subtilis Gb03 |
Companion Liq Biological Fung Greenhouse¸ Nursery&orna Crop2-3-2 [2 |
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Companion Liq Biological Fung Hydroponics 2-3-2 [3 |
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Bacillus Subtilis Qst713 Strain |
Plant Guardian Biofungicide Liquid Conc [37 |
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Plant Guardian Biofungicide Wettable Powder [38 |
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Rhapsody [10 |
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Serenade Aso [214 |
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Serenade Garden Disease Control -rtu- /organic Gardening [212 |
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Serenade Garden Disease Control Conc. [216 |
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Serenade Garden Disease Control R-t-spray [217 |
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Serenade Max [213 |
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Serenade Optimum /organic Production [208 |
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Bacillus Subtilis Var. Amyloliquefaciens Strain D747 Tgai |
Double Nickel 55 Biofungicide [35 |
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Double Nickel Lc Biofungicide [36 |
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Bacillus Subtilis¸ Mbi 600 |
Premier Pro-mix Bx W/biofungicide [5 |
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Pro-mix W/biofungicide [1 |
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Bacillus Thuringiensis Ssp. Aizawai |
Xentari Dry Flowable /organic Production [19 |
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Bacillus Thuringiensis Ssp. Israelensis |
Gnatrol Wdg Biological Larvicide /organic Production [44 |
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Gnatrol [3 |
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Bacillus Thuringiensis Ssp. Kurstaki 1 |
Biobit Hp Bio Insecticide Wettable Powder/organic Production [34 |
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Dipel Pro Df Biological Insecticide Dry Flow [17 |
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Foray Xg Biological Insecticide [40 |
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Bacillus Thuringiensis Ssp. Kurstaki 7841 |
Crymax Bioinsecticide [16 |
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Bacillus Thuringiensis Ssp. Kurstaki Strain Sa-12 |
Monterey B.t. Rtu /organic Gardening [98 |
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Bacillus Thuringiensis Subsp. Galleriae |
Beetlejus For Ornamental And Vegetable Pests [46 |
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Chromobacterium Sub Strain Praa4-1 Cells |
Grandevo Pto [2 |
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Grandevo [5 |
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Mbi-203 Ep Bioinsecticide [4 |
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Gliocladium Virens G-21 |
Soilgard Microbial Fungicide [33 |
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Isaria Fumosorosea |
Pfr-97 20% Wdg Microbial Insecticide /organic Production [26 |
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Preferal Microbial Insecticide [67 |
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Myrothecium Verrucaria¸ Dried Ferm. Slds/slbs |
Ditera Df Biological Nematicide [39 |
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Pythium Oligandrum Dv 74 |
Polyversum [1 |
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Streptomyces Griseoviridis Strain K61 |
Mycostop Biofungicide / Vegetable & Ornamental Crops [1 |
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Mycostop Mix [2 |
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Streptomyces Lydicus Wyec 108 |
Actino-iron Biological Fungicide 0-0-0 [7 |
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Actinovate Ag Biological Fungicide [1 |
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Actinovate Sp Biological Fungicide [2 |
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Trichoderma Asperellum Strain Icc 012 |
Bio-tam 2.0 [7 |
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Bio-tam [20 |
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Tenet Wp [5 |
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Trichoderma Gamsii Strain Icc 080 |
Bio-tam 2.0 [7 |
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Bio-tam [20 |
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Tenet Wp [5 |
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Trichoderma Hamatum Th382 |
Incept [123.2 |
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Trichoderma Harzianum Rifai Strain Krl-ag2 |
Rootshield Granules [1 |
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Rootshield Plus+ Granules Biological Fungicide [13 |
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Rootshield Plus+ Wp Biological Fungicide [12 |
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Rootshield Wp Biological Fungicide [8 |
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Trichoderma Virens Strain G-41 |
Rootshield Plus+ Granules Biological Fungicide [13 |
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Rootshield Plus+ Wp Biological Fungicide [12 |
(Approved Pesticides subject to change at any time, be sure to check before applying)