Yes. Adults 21 and older can legally possess and use cannabis in California, and qualified medical patients have had legal protections since 1996. Both come with limits, and federal law still treats most marijuana differently.
Marijuana is legal in California for adults 21 and older under Proposition 64 (2016) and for qualified patients under Proposition 215, the Compassionate Use Act of 1996. Legal does not mean unlimited: state law sets possession and home grow limits, bans public consumption and impaired driving, and lets cities and counties restrict cannabis businesses and outdoor cultivation. This guide explains what is allowed as of October 2026, how medical and adult-use rules differ, and how federal law fits in after the 2026 federal rescheduling of state-licensed medical marijuana.
Health and Safety Code section 11362.1, added by Proposition 64, allows adults 21 and older to possess, transport, purchase, and use cannabis within set limits. Adults may also give away cannabis within those limits to other adults 21 and older, as long as no payment of any kind is involved.
Purchases must be made from a state-licensed retailer or delivery service, which must check a valid government-issued ID showing you are 21 or older.
California's medical program predates adult-use legalization. A qualified patient is someone whose California-licensed physician has recommended cannabis for a medical condition. Patients can also apply for an optional county-issued Medical Marijuana Identification Card (MMIC) through the California Department of Public Health program.
Medical status matters in practice: patients 18 to 20 can buy from medicinal retailers, possession and plant limits are higher, and MMIC holders do not pay sales and use tax on qualifying medicinal purchases. Our medical vs recreational guide compares the two side by side.
18 and older with a physician recommendation or MMIC at medicinal retailers. Minors can only participate through a parent or guardian acting as primary caregiver.
Up to 8 ounces of dried cannabis per patient under state guidelines, or more if a physician recommends it and local rules allow.
Up to 6 mature or 12 immature plants per patient, subject to local cultivation rules.
Legalization came with clear limits. Breaking them can lead to fines, misdemeanor charges, or loss of medical protections, depending on the conduct.
Cities and counties can ban cannabis storefronts, regulate deliveries, and prohibit outdoor home cultivation. They cannot completely ban adult personal cultivation inside a private residence or a fully enclosed, secure accessory structure. Check your local ordinance before buying or growing.
Federal law changed in 2026, but only partly. On April 28, 2026, a U.S. Department of Justice order moved two categories of marijuana from Schedule I to Schedule III of the federal Controlled Substances Act: marijuana in FDA-approved drug products, and marijuana subject to a state medical marijuana license. State-licensed medical businesses generally need DEA registration to operate under the new framework. All other marijuana, including adult-use (recreational) cannabis, remains in Schedule I.
A DEA administrative hearing on moving the rest of marijuana to Schedule III was held from June 29 to July 15, 2026. As of October 2026 no final decision has been issued, and the judge paused the proceeding on September 29, 2026 to consider additional evidence. How the medical rule applies to California's combined medical and adult-use market is still being worked out.
In practice, it remains a federal crime to bring cannabis across state lines or onto federal land such as national parks, military bases, and federal buildings, even if you hold a California recommendation. Federal employment, federal housing, and firearm rules can also still be affected by cannabis use. See our gun ownership page at /gun-ownership/ for the June 2026 Supreme Court decision in United States v. Hemani.
Since January 1, 2024, California law (Government Code section 12954) generally bars employers from discriminating against applicants or employees for off-duty cannabis use away from work, or based on drug tests that detect only non-psychoactive cannabis metabolites. Employers can still prohibit use or impairment on the job, and there are exceptions, including some building and construction trades and positions requiring federal background checks or security clearances. State law does not require employers to allow cannabis use at work.
Landlords and property owners may prohibit smoking or growing cannabis on their property. Read your lease before growing at home.
Last reviewed: October 13, 2026. This page is general information, not legal or medical advice.
Yes. Since Proposition 64 passed in November 2016, adults 21 and older may possess up to 28.5 grams of cannabis and 8 grams of concentrate, and grow up to six plants per residence. Licensed retail sales began in January 2018.
Adults 21 and older do not need one to buy cannabis legally. Patients choose medical status for practical reasons, such as access at 18, higher possession and plant limits, higher-potency medicinal products, and, for MMIC holders, the sales and use tax exemption.
No, not generally. As of April 28, 2026, marijuana in FDA-approved products and marijuana subject to a state medical license are in Schedule III, which remains a controlled-substance category. Adult-use marijuana is still Schedule I, and a broader rescheduling decision was still pending in October 2026.
No. Crossing state lines with cannabis violates federal law, and airports and airplanes fall under federal jurisdiction. Some other states recognize out-of-state medical patients, but California law cannot protect you there.
No. Smoking or vaping cannabis in public places, and anywhere tobacco smoking is prohibited, is not allowed. Some cities permit licensed on-site consumption lounges.
Cities and counties can ban or limit cannabis businesses and outdoor home grows. They cannot fully ban adult personal cultivation indoors in a private residence or a secure accessory structure.
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