Adults 21 and older can buy cannabis without a recommendation, but medical status still changes your age eligibility, legal limits, taxes, and product options.
California runs two cannabis systems side by side. Adult-use (recreational) cannabis is governed mainly by Proposition 64 and is open to anyone 21 or older. Medical cannabis rests on Proposition 215 and later laws, and is available to qualified patients with a recommendation from a California-licensed physician, with or without a county-issued Medical Marijuana Identification Card (MMIC). Many dispensaries hold both a medicinal (M) and adult-use (A) license, so the products may look similar on the shelf. The differences come down to who can buy, how much you can possess and grow, what you pay in tax, and which higher-potency products you can access.
Adult-use retailers may only sell to customers 21 and older with a valid government-issued ID. Under Business and Professions Code section 26140, medicinal retailers may sell to customers 18 and older who show a valid government ID plus either a valid physician's recommendation or a county-issued MMIC.
Patients under 18 cannot buy cannabis themselves. A minor can only participate through a parent or legal guardian acting as primary caregiver, as described on our caregiver page at /caregiver/ and our minors guide.
21 and older. Government-issued ID only. No medical documentation needed.
18 and older with a physician recommendation or MMIC. Minors only through a parent or guardian acting as caregiver.
Adults 21 and older may possess up to 28.5 grams (about one ounce) of non-concentrated cannabis and up to 8 grams of concentrated cannabis under Health and Safety Code section 11362.1.
Qualified patients and their primary caregivers may possess up to 8 ounces of dried cannabis per patient under Health and Safety Code section 11362.77. If a physician recommends a larger amount to meet the patient's medical needs, the patient may possess an amount consistent with those needs, and cities or counties may adopt guidelines above the state amounts. Only dried, mature, processed flowers of the female plant, or the equivalent in converted form, count toward the medical limit.
Adults 21 and older may grow up to six living plants at one time per private residence, no matter how many adults live there. Plants must be kept in a locked space and not visible from a public place. Local governments may ban outdoor cultivation but cannot completely ban indoor cultivation in a private residence or a fully enclosed, secure accessory structure.
State medical guidelines allow up to 6 mature or 12 immature plants per qualified patient, and a physician may recommend more. Local governments can still regulate medical grows, so check your city or county rules. Our cultivation license page explains home grow limits in more detail.
Every retail cannabis purchase in California, medical or recreational, is subject to the state cannabis excise tax. The California Department of Tax and Fee Administration (CDTFA) lists the rate as 15 percent of gross receipts since October 1, 2025, after Assembly Bill 564 reversed a brief increase to 19 percent that applied from July 1 to September 30, 2025. AB 564 also postponed the next possible rate adjustment until the 2028-29 fiscal year.
The difference is sales and use tax. Patients who show a valid county-issued MMIC and a valid government ID at a licensed retailer are exempt from sales and use tax on qualifying medicinal cannabis. A physician recommendation by itself does not trigger the exemption. Local cannabis taxes vary by city and county. See our tax benefits page for details.
Department of Cannabis Control regulations (California Code of Regulations, title 4, section 17304) set the same edible limits for most products: no more than 10 mg THC per serving and 100 mg THC per package. Medical patients get access to some products adult-use customers cannot buy.
Buy only from businesses licensed by the Department of Cannabis Control, whether storefront or delivery. Licensed retailers designated M (medicinal), A (adult-use), or both must check ID, and medicinal sales also require your physician recommendation or MMIC. You can confirm a business's license with the DCC's online license search. Unlicensed shops and delivery services are not subject to state testing and labeling rules, and purchases there do not qualify for the medical tax exemption.
Some cities and counties ban storefront retail, so medical patients in those areas often rely on licensed delivery services, subject to local rules.
As of October 2026, federal law places marijuana subject to a state medical license in Schedule III and keeps adult-use marijuana in Schedule I. Neither status lets you carry cannabis across state lines or onto federal property.
Last reviewed: October 13, 2026. This page is general information, not legal or medical advice.
It can be for MMIC holders. Both pay the 15 percent state excise tax, but MMIC holders who show their card and a government ID are exempt from sales and use tax on qualifying medicinal purchases. Prices themselves are set by each retailer.
Only at a medicinal retailer, and only with a valid government ID plus a valid physician recommendation or county-issued MMIC. Adult-use purchases require being 21 or older.
No. Medicinal retailers may accept either a valid physician recommendation or an MMIC, together with a government-issued ID. The MMIC is needed only for the sales and use tax exemption.
Yes, for some categories. Topicals and concentrates labeled FOR MEDICAL USE ONLY may contain up to 2,000 mg THC per package versus 1,000 mg for adult-use, and medical-only orally dissolving edibles may contain up to 500 mg per package.
State medical guidelines allow up to 6 mature or 12 immature plants per patient, compared with six plants per residence for adult-use. Local governments can regulate medical grows, so check local rules first.
CDPH treats MMIC patient information as medical information under California's Confidentiality of Medical Information Act, and the law enforcement verification system shows only the card number and whether it is valid.
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