Cannabis Possession Limits: How Much You Can Legally Carry in the US
Cannabis possession limits in the US usually cap flower at 1 ounce in public, with higher home and medical allowances that vary by state and product type.
Start With the Cap in the State Where You Stand
Buy from a licensed retailer in the state where you are, and keep the whole order at or under that state's possession limit. Possession caps set how much flower, concentrate, or edible one adult may hold at a time. The number changes by state and by card type, medical or recreational, and it applies to what you carry, not to how many separate items sit in the bag. Four grams here and six grams there still add up to one total. If a seller cannot name the state license behind the sale, walk away.
Where Possession Limits Come From
Each state writes its own cannabis code. Adult-use states set a public carry limit, often one ounce of flower, and a separate home limit that can run higher. Medical states tie limits to a patient registry card, and those caps tend to be larger. Federal law lists cannabis as a controlled substance, so no state cap protects you in the air, on a federal highway, or in the mail. Hemp-derived THC sits under a different federal rule, a 0.3 percent THC limit on dry weight, yet several states restrict those products on their own.
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Typical Bands You Will See
Numbers shift as legislatures amend bills, so confirm the current figure with the state regulator before you order.
How Many Grams Get You a Felony? State and Federal Thresholds
- Adult-use flower: one ounce (28 grams) carried in public is the common figure. A handful of states allow two to two and a half ounces at home.
- Concentrates: five to eight grams is the usual cap, though some states measure the cap in total THC instead of weight.
- Edibles: 100 mg THC per package, with 10 mg per serving, is the common retail package. Medical programs can allow more.
- Medical flower: two to three ounces is common, and some states go higher, up to six ounces or a rolling 60 day supply.
- Combined caps: many states fold flower and concentrate into one total, so one ounce of flower or eight grams of concentrate, not both.
What to Check on a Licensed Listing
- State license number for the retailer and, where shown, the cultivator.
- A delivery radius that stays inside the state.
- Per item THC and weight so you can total your cart against the cap.
- Age gate at 21 or the medical age in that state.
- Clear policy on returns, order minimums, and ID checks at the door.
Pitfalls
- Crossing a state line with product. That turns a state-law purchase into a federal offense.
- Mail order from an unlicensed seller. USPS and private carriers cannot move cannabis under federal rules.
- Treating home limits as carry limits. A two ounce home stash can still be over the public cap.
- Letting a medical card lapse. An expired card drops you to the adult-use cap.
- Ignoring local rules. Some cities ban delivery or set tighter caps than the state.
FAQ
Can I buy cannabis online and have it shipped to my door?
Inside states with licensed delivery, yes, from a retailer that holds a delivery permit. Interstate shipping is not allowed under federal law.
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Does my limit reset when I cross into another state?
No. The cap in the state you enter applies to what you carry, and moving cannabis across a state line is a federal offense.
Do hemp-derived THC gummies count toward the limit?
In some states they do, and in others the products are restricted or banned. Read the state hemp statute and the state cannabis code side by side.
Is the limit per person or per household?
Most states set the cap per adult 21 and older. A few add a household total, so two adults in one home can hold less than double the single-adult figure.