The short answer for 2025
Cannabis is legal in California in 2025 for adults 21 and older, and the only fully legal way to buy it is from a store or delivery service licensed by the California Department of Cannabis Control. Medical cannabis has been legal since 1996 and adult use since Proposition 64 passed in 2016. Those rules carry into 2025 with one addition: a state law that took effect on January 1, 2025 lets cities and counties allow licensed retailers with consumption lounges to sell food, non-alcoholic drinks, and host live entertainment. For a buyer, the practical advice is simple. Confirm the seller holds a current state license, choose products with a lab-tested batch label, and stay inside the personal possession limits. A legal purchase protects you from fines, from untested pesticides and mold, and from products whose THC content does not match the label.
What to look for before you buy
- License verification: licensed storefronts and delivery services must post or provide their DCC license number. If a seller will not show one, walk away.
- Packaging: legal cannabis arrives in child-resistant packaging with the universal THC symbol and a batch or track-and-trace identifier.
- Testing data: potency figures should come from a licensed lab. Ask about pesticide, microbial, and heavy metal results if the label does not list them.
- Dates: check the package date and harvest date. Flower loses potency and terpenes over months, and vape cartridges have a shelf life too.
- Dosing per unit: for edibles, read milligrams per serving and the number of servings, not just the package total.
- Payment: since cannabis remains federally illegal, most shops run cash or a cashless ATM. Bring a payment method the store accepts.
Parameter bands you can expect on legal labels
- Edibles: 10 mg THC per serving is the state cap, with 100 mg per package for adult use. New users often start at 2.5 mg to 5 mg.
- Flower: most legal flower tests between 15% and 30% THC. Treat labels above 35% with caution.
- Concentrates: 60% to 90% THC is typical for wax, shatter, rosin, and live resin.
- Vape cartridges: 70% to 90% THC is common, while live resin and rosin carts run lower and carry more flavor.
- Tinctures and beverages: dosed in small increments, often 1 mg to 5 mg per unit, which makes them easier to titrate.
- CBD ratios: 1:1 through 20:1 CBD to THC for shoppers who want less psychoactivity. Topicals are not intoxicating.
Possession, growing, and where you can use it
Adults 21 and older may possess up to 28.5 grams of cannabis flower and up to 8 grams of concentrated cannabis. You can grow up to six plants per residence, and the plants must stay locked and out of public view. Public consumption is not allowed. Smoking or vaping is banned in public places, in vehicles, within 1,000 feet of a school, day care, or youth center while children are present, and anywhere tobacco smoking is prohibited. Driving under the influence of cannabis is illegal, and an open container of cannabis in a vehicle is treated like open alcohol.
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Pitfalls that cost buyers money
- Unlicensed delivery: apps and websites that ship "gifts" or sell hemp-derived THC flower sit outside the legal market and carry no testing guarantee.
- THC chasing: the highest number on the label is not the best product. Terpenes, freshness, and your own tolerance matter more.
- Assuming your city allows shops: many California cities ban storefront retail, though licensed delivery may still reach your address. Check the state license lookup before you drive across town.
- Out-of-state orders: shipping cannabis across state lines is a federal offense, no matter what a seller claims.
- Air travel and federal land: national parks, federal buildings, and airport security fall under federal law. Leave cannabis at home.
- Edibles on an empty stomach: absorption can take one to two hours, which leads to repeat dosing and unpleasant experiences. Wait before taking more.
FAQ
Do I need a medical card to buy cannabis in California?
No. Anyone 21 or older can buy adult-use cannabis from a licensed retailer with a valid government ID. Patients 18 and older can buy medical cannabis with a physician's recommendation, and patients who hold a state Medical Marijuana Identification Card may qualify for lower state excise tax at the register.
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How much can I buy at one time?
Retail purchase limits are higher than the public possession limit. A licensed store may sell up to 28.5 grams of flower, 8 grams of concentrate, or 100 mg of edible THC to one adult customer per day. Keep what you carry in public within the possession limits.
Can I buy cannabis online?
Yes, if the seller holds a California retail or delivery license. Licensed delivery is legal in many areas and can serve cities that do not allow storefront shops. Ordering from a seller in another state is not legal.
Can I smoke at a lounge or cafe?
Some cities allow licensed consumption lounges, and the 2025 rules let those lounges add food, non-alcoholic drinks, and live entertainment where local law permits. Availability depends on your city or county.
Is cannabis legal on tribal or federal land?
Rules vary. Federal land follows federal law, where cannabis remains illegal. Tribal lands operate under their own agreements with the state.