Local Marijuana Guidelines In California: What’s The Law In Your City? the420times October 7, 2009 The LawAccording to California state law as determined by California Senate Bill 420, patients or caregivers “can own up to 6 mature or 12 immature plants per patient” and “can possess up to eight ounces of dried marijuana per patient.”However, there are a handful of localities that have marijuana cultivation and possession laws that differ from state laws. They are the following:– Arcata – Butte Co. – Calaveras Co. – Del Norte Co. – El Dorado Co. – Humboldt Co. – Mendocino Co. – Nevada Co. – Oakland – San Diego – San Francisco – Santa Cruz – Sonoma Co. – Tehama Co. – Trinity Co.To read the specific laws of any of the above listed localities, visit CANorml.org. One Response a420chick June 23, 2011 Didnt the Suprem Court determine the limitations outlined in SB420 were unconstitutional? Why doesnt anyone know that…? Log in to ReplyLeave a Reply Cancel ReplyYou must be logged in to post a comment.