The Washington State Liquor Control Board and the Washington State Department of Agriculture recently released their list of acceptable pesticide products that may be used to produce recreational marijuana. Any grower caught using an unauthorized pesticide is in violation of WAC 314-55-520 and could result in the cancelation of their license.
According to WAC 314-55-010(13), a pesticide is "any substance or mixture of substances intended to prevent, destroy, control, repel, or mitigate any insect, rodent, snail, slug, fungus, weed, and any other form of plant or animal life or virus, except virus on or in a living person or other animal which is normally considered to be a pest, and any substance or mixture of substances intended to be used as a plant regulator, defoliant, or desiccant; and any spray adjuvant."
It is important for everyone involved in the marijuana production chain to understand the pesticide rules and the acceptable pesticides that may be used. The WSDA recommends that pesticides be crosschecked with the over 200 pesticides that are allowed to be used in marijuana production.
You can view the preliminary list of over 200 pesticides registered by WDSA by visiting their online database.