Cannabis Possession Limits in California: How Much Can You Carry?

If you are 21 or older in California, you can legally carry up to 28.5 grams of non-concentrated cannabis (about one ounce of flower) and up to 8 grams of concentrated cannabis. That is the rule in California Health and Safety Code section 11362.1. Concentrate limits include the concentrate contained in products such as vapes and some infused items, so the math is not always as simple as the weight on the label. Below we explain how the two limits work, what happens if you go over, and how to carry cannabis without trouble.

There is no national possession rule in the United States. The number you see in a headline about Colorado, New York or New Jersey does not apply here, and this guide covers California only.

TL;DR

• Adults 21 and older may possess up to 28.5 grams of flower and up to 8 grams of concentrated cannabis at once.
• Concentrate counts include concentrate contained in products, so vape cartridges, wax and similar items all draw from the same 8 gram allowance.
• Going over the limit can mean up to six months in county jail, a fine up to $500, or both for people 18 or older.
• In a car, cannabis must be sealed or in the trunk, and cities and counties can set stricter local rules.
• Buying from a licensed source with a clear label makes it easy to know what you are holding.

Table of Contents

• The California limits at a glance
• How the limits count flower, vapes, edibles and pre-rolls
• Carrying cannabis in public versus keeping it at home
• Age rules: 21 and over, and what changes at 18
• What happens if you go over the limit
• Local rules can be stricter
• Driving with cannabis
• A simple way to stay within the limits
• Why licensed, lab-tested products make this easier
• Perspective
• Order within the limits, delivered to your door
• FAQ
• Sources

The California limits at a glance

California sets two separate ceilings for adult-use cannabis. Both come from Health and Safety Code section 11362.1, which lets adults 21 and older possess, transport, purchase or obtain these amounts:

The same section lets you give up to 28.5 grams of non-concentrated cannabis to another adult 21 or older, as long as you do it without compensation. Selling it is a different matter and needs a license.

The two limits are separate, so a person can carry flower and concentrate in the same trip. You are not asked to split one allowance between them. Each type has its own ceiling.

How the limits count flower, vapes, edibles and pre-rolls

This is where most people get confused. The law talks about weight of cannabis, but a store menu talks about milligrams of THC, grams of flower and cartridge sizes.

Flower and pre-rolls

Flower is the easy one. Weigh what you have, including the cannabis inside any pre-rolls, and keep the total at or under 28.5 grams. A standard single pre-roll is usually about a gram, so a handful of them uses very little of your allowance. An eighth is 3.5 grams, and a quarter ounce is 7 grams. Eight eighths is the full ounce, so that is the point at which you stop adding.

Gram weights on the label usually refer to the product itself. The packaging and your container are not meant to be counted, but the cannabis is.

Vapes, wax and other concentrates

The 8 gram limit covers concentrated cannabis, including as contained in cannabis products. A half-gram or one-gram cartridge is a concentrate product, as is a gram of live resin or rosin. Eight one-gram cartridges would put you right at the line.

Concentrates are also much stronger than flower, which is why the lawmakers drew a tighter line for them. If you want to understand what those potency numbers mean before you buy, our guide on choosing concentrates or flower safely walks through it.

Edibles and infused products

Edibles are the part where the statute’s wording matters most. The text counts concentrate as contained in cannabis products toward the 8 gram limit. In practice, that means you should treat infused products as part of your concentrate math rather than assuming they are free. The sensible approach is to keep the whole bag small. A normal shopping trip, a few packs of gummies, a cartridge and a few pre-rolls, sits far below both ceilings.

If you are not sure how a particular product counts, look at the label. Our guide to reading cannabis labels shows where the net weight, THC totals and batch details appear on a California package.

Carrying cannabis in public versus keeping it at home

The 28.5 gram and 8 gram figures are the numbers that apply to possession and transport. For the home, California handles things a little differently, because adults 21 or older may plant, harvest, dry and process up to six cannabis plants at their residence or on its grounds.

Two practical takeaways follow:

1. What you carry out of the house should stay within the two limits. Even if you grow, treat 28.5 grams of flower and 8 grams of concentrate as your limit when you are out.
2. Home cultivation rules have their own conditions. The plants must be at your residence or grounds, and cities and counties can regulate how they are grown. Check your local rules before you plant.

The statute is the place to settle edge cases about harvested cannabis at home. If your situation is not simple, ask a California cannabis attorney instead of relying on a forum post.

Age rules: 21 and over, and what changes at 18

Adult-use cannabis in California is for people 21 or older. People 18 or older with a physician’s recommendation may buy medicinal cannabis, according to the Department of Cannabis Control. Medicinal cannabis users also have higher possession limits than adult-use consumers.

For younger people, the penalties are lower but real. Under Health and Safety Code section 11357, possession within the limits by someone 18 to 20 is an infraction punishable by a fine of up to $100. People under 18 face an infraction plus drug education or counseling and community service.

Our delivery service is for adults 21 and older. Anyone younger than that is outside what we can serve.

What happens if you go over the limit

The same section, Health and Safety Code section 11357, sets the consequences. People 18 or older who possess more than 28.5 grams of cannabis, or more than 8 grams of concentrated cannabis, may face up to six months in county jail, a fine up to $500, or both. For people under 18, possessing more than those amounts is an infraction.

A few other points that catch people out:

• Schools. Adults 18 or older who possess even up to 28.5 grams of cannabis or 8 grams of concentrate on K-12 school grounds while classes or school programs are open commit a misdemeanor, according to a California defense law summary of section 11357. Being inside the limit does not protect you there.
• Quantity can look like sales. Prosecutors can treat a very large amount, especially with scales and packaging, differently from personal use. The charges for sales are separate from simple possession.
• Local and federal rules still exist. Cannabis remains illegal under federal law, so carrying it onto federal land or across state lines is a separate risk, even between two legal states.

If you are facing a charge, speak to a licensed California criminal defense attorney. An article cannot assess your case.

Local rules can be stricter

State law sets the baseline, but the Department of Cannabis Control notes that local jurisdictions in California may have stricter cannabis laws and tells consumers to check city or county websites. That matters most for consumption. Use in public places, near schools and in many rental properties is restricted, and a landlord can set rules for their building.

The broader legal picture is laid out on the Department of Cannabis Control’s page on California’s cannabis laws. It explains that Business and Professions Code provisions cover business licensing and regulation, while Health and Safety Code provisions cover age, possession limits and medical cannabis.

Driving with cannabis

A legal amount can still become a problem in a vehicle. The Department of Cannabis Control says that in a vehicle, cannabis must be sealed or kept in the trunk. Practical habits that help:

• Keep products in their original sealed packaging until you reach your destination.
• Put them in the trunk, or the farthest storage area if your vehicle has none.
• Never use cannabis while driving, and do not drive impaired.
• Keep odor in check; a smell-proof packaging checklist can help you choose bags that hold up.

For a fuller walk-through, read our post on driving with weed in California.

A simple way to stay within the limits

Most people never come close to the ceilings. The problem is usually stockpiling or carrying a friend’s share. A few habits make it easy:

1. Buy for the week, not the month. Smaller orders keep the total on you low.
2. Add up concentrate products. Cartridges, wax and similar items share one 8 gram allowance.
3. Keep the receipt and original packaging. Licensed packaging carries the label information that shows where the product came from.
4. Do not carry for others. Giving 28.5 grams to another adult without payment is allowed. Taking money for it is not.
5. Know your city. Look up local rules before consuming in a new area.

Why licensed, lab-tested products make this easier

When you buy from a licensed source, the package tells you the weight and the cannabinoid content, and a lab result backs it up. That makes your limit math a matter of reading labels, not guessing. It also means you know what is in the product, which matters for strength: our explainer on why THC percentage misleads shows how to read total THC rather than the headline number.

Perspective

We hear the same worry from first-time customers in Oakland and Berkeley: “Am I going to buy too much?” The honest answer is that a normal order is nowhere near the legal ceiling, but the confusion about concentrates is real. People count the weight of a cartridge and forget that it draws on the 8 gram allowance.

That is why we built our menu around a curated set of trusted California brands such as STIIIZY and Buddies, with verifiable lab results and batch consistency. When the label is clear and the product is licensed, you can see exactly what you are holding and keep it inside the line. We think the best protection is knowing your product, and we would rather you order a little less and be certain than stock up and guess.

Our drivers know the East Bay, so you can have the order brought to your door instead of carrying it across town and through a car. Delivering to your home also means the cannabis stays out of your trunk and your bag until you are where you plan to use it.

Jake

Order within the limits, delivered to your door

We deliver licensed, lab-tested flower, pre-rolls, vaporizers, concentrates, edibles and accessories to adults 21 and older across Alameda County, with same-day delivery. Browse the full menu on our homepage, or place a same-day order when you are ready. Check our delivery areas to confirm your city, including Berkeley.

Our menu is curated, so you are not scrolling through hundreds of unknown products. If you are unsure how much to order, start small. You can always order again.

FAQ

How much weed can I carry in California?

Adults 21 and older may carry up to 28.5 grams of non-concentrated cannabis, roughly one ounce of flower, and up to 8 grams of concentrated cannabis. The concentrate limit includes concentrate as contained in cannabis products. The source is Health and Safety Code section 11362.1.

Is there a nationwide possession limit?

No. There is no single national possession rule, and the amount you can carry changes from state to state. Cannabis is also still illegal under federal law, so crossing a state line with it is risky even if both states have legal markets. For California, use the state limits above and your city’s rules.

What is the penalty for carrying too much cannabis?

Adults 18 or older with more than 28.5 grams of cannabis or more than 8 grams of concentrate may face up to six months in county jail, a fine up to $500, or both. The rule is in section 11357. For under-18s, the same excess is an infraction.

Can I keep cannabis in my car?

Yes, but it has to be sealed or in the trunk, according to the Department of Cannabis Control. Never consume it while driving. Our guide to driving with weed covers more situations.

Do city rules change the limit?

Local governments can set stricter rules on cannabis than the state baseline, so check your city or county website. The Department of Cannabis Control says the same on its consumer page. For more reading on cannabis shopping, see our cannabis blog.

Sources

• California Code, Health and Safety Code 11362.1
• California Code, Health and Safety Code 11357
• What’s Legal, Department of Cannabis Control
• What’s Legal, California Department of Public Health
• California’s cannabis laws, Department of Cannabis Control
• Possession of Marijuana, Health and Safety Code 11357 summary

Recommended

• Driving With Weed in California: What’s Legal and What Isn’t
• How to Read Cannabis Labels: A California Buyer’s Guide
• 1:1 THC:CBD Explained: What the Ratio Does and Doesn’t Do