California

Overview

California was the first US state to legalize medical cannabis, doing so on November 5, 1996 via Proposition 215 (the Compassionate Use Act), codified at California Health and Safety Code §11362.5. The framework was substantially expanded by Senate Bill 420 (2003), which created the voluntary patient ID-card program and county-level patient registries.

Adult-use cannabis was legalized on November 8, 2016 via Proposition 64 (the Control, Regulate and Tax Adult Use of Marijuana Act, AUMA), which passed with 57.1% support. Commercial adult-use retail sales began January 1, 2018. The state's medical and adult-use frameworks were consolidated under the Medicinal and Adult-Use Cannabis Regulation and Safety Act (MAUCRSA) in 2017 and are now administered by the Department of Cannabis Control (DCC).

Adult-use (Proposition 64, 2016)

• Public possession: 1 ounce of cannabis flower or 8 grams of concentrate.
• Purchase: same as possession per day.
• Home cultivation: up to 6 plants per residence (not per adult), kept out of public view. Local governments may regulate but not prohibit indoor cultivation; outdoor cultivation may be prohibited locally.
• Excise tax: 15% state cannabis excise tax at retail, plus standard state and local sales tax.
• Past convictions: AUMA included automatic resentencing and record-sealing provisions for prior cannabis offenses; AB 1793 (2018) required district attorneys to identify eligible cases.

Medical program (Compassionate Use Act, 1996)

Qualifying conditions

The Compassionate Use Act enumerates specific conditions and includes a physician-discretion clause covering "any other illness for which marijuana provides relief." Commonly enumerated and physician-certified conditions include:

• Cancer, AIDS / HIV, anorexia / cachexia
• Chronic pain, severe nausea
• Seizures (including epilepsy), persistent muscle spasms (including MS)
• Glaucoma
• Arthritis, migraine
• Post-traumatic stress disorder
• Any chronic or persistent medical symptom that substantially limits major life activities

Patient access

• Possession: the Compassionate Use Act and SB 420 set baseline possession at 8 ounces dried plus 6 mature or 12 immature plants, with patient/physician authority to exceed for clinical need.
• Approved forms: flower, edibles, oils, tinctures, capsules, vapes, topicals. Full spectrum permitted under MAUCRSA.
• Home cultivation: medical patients retain Compassionate Use Act cultivation rights, which may exceed the 6-plant adult-use limit when supported by physician recommendation.
• Reciprocity: California does not formally honor out-of-state medical cards; visiting patients aged 21+ may purchase from any adult-use retailer.

Adult-use penalties

Possession of cannabis in excess of the adult-use limits is regulated under Health and Safety Code §11357 et seq. Most over-limit possession remains an infraction or misdemeanor for adults; sale or cultivation without a license can be charged as a misdemeanor or felony scaling by quantity. Possession by minors (under 18) is an infraction with mandatory drug education and community service.

Patients and caregivers

• Patient minimum age: 18. Minor patients require a parent or legal guardian as designated caregiver plus physician recommendation.
• Caregiver minimum age: 18.
• Caregivers per patient: one primary caregiver per patient; a primary caregiver may serve more than one patient when patients reside in the same city or county.
• Caregiver registration: at the county level via the voluntary Medical Marijuana Identification Card Program.

Historical context

California's 1996 Proposition 215 catalyzed the modern US medical-cannabis movement and provided the legal template that more than 30 states subsequently adopted in some form. Federal–state conflict over California's program drove much of the 2000s-era enforcement debate, culminating in the Cole Memorandum (2013) non-prosecution guidance and the Rohrabacher–Farr Amendment appropriations rider that has been renewed every year since 2014 to bar federal Department of Justice funds from being used to prosecute compliance with state medical-cannabis laws.

Hemp and CBD legality

California's industrial-hemp framework is administered by the California Department of Public Health (CDPH) Industrial Hemp Enrollment and Oversight Program under AB 45 of 2021 (California Industrial Hemp Law). AB 45 brought hemp-derived CBD and other non-intoxicating hemp products into a registration, labeling, testing, and consumer-protection framework that runs separately from the licensed cannabis program administered by the Department of Cannabis Control (DCC).

The most consequential 2024 development came outside the legislature: Governor Gavin Newsom announced emergency regulations in September 2024 prohibiting any hemp-derived product containing detectable THC from being sold outside the licensed cannabis supply chain. Under the emergency rule (filed with the Office of Administrative Law and subsequently made permanent through CDPH-companion rulemaking in 2025), hemp-derived products sold at general retail must contain 0.0 mg of total THC per serving and 0.0 mg of total THC per package. Products above that threshold — including the bulk of the prior delta-8, delta-9 hemp-source, delta-10, THC-O, and HHC retail market — may be sold only through DCC-licensed cannabis retailers, where they are taxed and regulated identically to cannabis.

The Hemp Industries Association and California Hemp Council filed suit in Sacramento County Superior Court seeking a preliminary injunction. Relief was denied in late 2024; the rule has remained in effect pending appeal. Subsequent legislation (SB 1097-companion rulemaking in 2025) codified portions of the emergency framework.

Industrial hemp grown under the CDPH Enrollment Program for fiber, seed, and CBD remains lawful. Smokable hemp flower is restricted under the same total-THC framework as intoxicating cannabinoids. The California Department of Cannabis Control's licensed retailers continue to offer hemp-derived products that fit within the cannabis program; the regulatory line between hemp and cannabis at the retail counter is now substantially erased. Informational only — not legal advice.

Federal employment and military service

California hosts the largest concentration of active-duty military personnel of any US state. Camp Pendleton, Marine Corps Air Station Miramar, Marine Corps Base 29 Palms, Naval Base San Diego, Naval Base Ventura County, Naval Air Station Lemoore, Edwards Air Force Base, Travis Air Force Base, Beale Air Force Base, Vandenberg Space Force Base, the Presidio of Monterey, and Coast Guard installations along the Pacific coast collectively employ several hundred thousand uniformed service members and federal civilian staff. State legalization under Proposition 64 does not extend to federal property or to federal employment status.

Affected populations:

• Active-duty military: UCMJ Article 112a prohibits cannabis use regardless of California law. A positive THC test results in administrative or punitive discipline.
• Federal civilian employees: subject to federal drug-free workplace rules under 5 U.S.C. §7301. A positive THC test is grounds for adverse action even where the employee holds a California medical recommendation.
• Security clearance holders: Security Executive Agent Directive 4 (SEAD 4) treats current cannabis use as a clearance concern regardless of state legality.
• Federal contractors: Drug-Free Workplace Act of 1988 applies; drug-testing requirements often flow through subcontract chains.
• CDL holders and other DOT-regulated employees: Department of Transportation 49 CFR Part 40 testing rules prohibit cannabis use; a positive test is disqualifying.

California Labor Code §96(k), as amended by AB 2188 (effective 2024), protects most California employees from adverse employment action based solely on off-duty cannabis use detected by hair, urine, or oral-fluid testing. The protection does not extend to federal-government employment, federal contractor positions, safety-sensitive positions defined by federal law, or positions subject to federal drug-testing mandates. VA medical providers cannot prescribe or recommend cannabis under federal VA policy, though VA benefits eligibility is not affected by lawful state-program participation. Informational only; not legal advice.