With no help from the federal government, states are trying to regulate recreational marijuana. California's Department of Cannabis Control works to keep contaminants out of joints, vapes and edibles.

California's legal weed industry is reeling over whistleblower lawsuit claims, key departures and fear over slumping sales ...

The dynamic in Antioch is a microcosm of greater California, where lax laws on black-market weed are doing little to change the state’s status as a gargantuan producer of it.

California police raided a suburban home near San Francisco, seizing 80 pounds of black-market marijuana in an upscale Antioch residence.

California lawmakers have sent Gov. Gavin Newsom bills that would allow cannabis cafes and let cannabis farmers sell their products at certain temporary events.

California's pot companies are pivoting to hemp and finding huge success after leaving the legal marijuana market.

Reviews of confidential lab reports, public records and interviews show California regulators have largely failed to address evidence of widespread contamination in the state’s weed crop.

Michigan overtakes California as top weed market by sales volume.

Since the start of this year, there have been several different weed recalls in California by the state's Department of Cannabis Control (DCC) for possible contamination of Aspergillus, a fungus ...

A weed recall in California has sparked a warning from officials for people to call their doctors if they experience symptoms after using the product.

Biden administration took a key step in reclassifying marijuana as a Schedule III drug. The change would help California pot businesses.