DPR Takes Action Against Stores Supplying Cannabis Growers for Violation of Pesticide Laws

Dan Industry News Release

The California Department of Pesticide Regulation (DPR) has fined a Bay Area hydroponic gardening store $20,000 for violating state pesticide laws that are designed to protect public health. The action is the latest in a series of enforcement cases involving hydroponics stores, whose customers often include cannabis growers.

The action against The Grow Biz, 1697 Pomona Ave., San Jose, California 95110, is for selling illegally repackaged pesticides.  Under California law, it is illegal to sell a pesticide unless it is in its original manufacturer’s container or packaging approved and registered by DPR.

“To repackage a pesticide so that it is unlabeled is an irresponsible act that potentially endangers employees, customers and their families and pets” said Brian Leahy, DPR director. “It can also adversely affect our environment including our water and soil.”


In March 2017, DPR enforcement staff made an unannounced inspection visit to The Growbiz in San Jose. Staff discovered packets of five illegally repackaged agricultural pesticides offered for sale to consumers. These illegal packets were made from the legally registered containers of pesticides that could only be sold for commercial agricultural use and were not permissible for home use.

Some of the pesticides required workers to wear protective clothing, including waterproof gloves, and were harmful if absorbed through the skin. Their illegal containers did not have mandatory safety warnings, such as “Keep out of reach of children” or “Avoid contact with skin, eyes clothing.” They also did not contain the required information about what to do in emergencies or any first aid treatment. They also lacked information on how to safely store and dispose of the pesticides.

During the course of the inspection and subsequent investigation, DPR also discovered that Growbiz was in violation of California state law that requires any company that sells an agricultural pesticide to have a DPR-issued pest control dealer license.

The action against Growbiz is the latest in a string of similar cases involving hydroponic stores.

  • In August 2017, Oregon Global Distribution Inc. (DBA NPK Industries) agreed to pay $55,000 after admitting to selling a pesticide without proper registration. In September 2016, DPR made an unannounced visit to Fremont Hydroponics, 45461 Fremont Blvd, Suite 1, Fremont California 94538. Prior to the visit the department had received information from Washington State and Oregon that a product called NPK Mighty Wash, which claimed to kill spider mites, beetles and other pests, illegally contained the pesticide pyrethrin. DPR discovered the store was selling the product and had it analyzed at a state laboratory. Tests confirmed the presence of pyrethrin. The company failed to disclose this information on the label and register it as a pesticide at the time, as required by California law.
  • In June 2017, GreenCoast Hydroponics, based in Los Angeles, paid $34,000 for violating pesticide laws by selling three pesticide products that had been taken from their original containers and illegally repackaged into smaller bottles, without proper registration. Some of the pesticides that were being repackaged are toxic when mishandled and potentially hazardous to human health. The active ingredient in some of the bottles sold at GreenCoast included pesticide products that attack plant-damaging spider mites but are not legal to use on plants intended for human consumption.

Due to federal laws, no pesticides are currently registered by the U.S. Environmental Protection Agency specifically for use on cannabis. Information about legal ways to control pests in California can be found on Cannabis and Pesticides.

More resources can be found at California Cannabis Portal.