How much cannabis can you possess in Missouri?

Recreational users can purchase up to 3 ounces per transaction. Medical patients can possess up to 6 ounces per 30-day period, with the option for a physician to authorize higher limits if medically necessary.

What is a Marijuana Equivalency Unit (MME) in Missouri?

Missouri uses Marijuana Equivalency Units to standardize limits across product types: 1 MME equals 3.5 grams of flower, 1 gram of concentrate, or 100 milligrams of THC in edible form. The recreational limit of 3 ounces equals approximately 24 MMEs.

What happens if you possess more than the legal limit in Missouri?

Possessing up to 2x the legal limit is a civil fine of $250 to $1,000. Possessing more than 2x the legal limit is a Class D felony punishable by up to 7 years in prison and a $10,000 fine. The jump from civil fine to felony at the 2x threshold is steep.

Can you gift cannabis in Missouri?

Yes. Adults 21+ can gift cannabis to other adults 21+ as long as the gift is genuinely free with no compensation, barter, or hidden transaction. Both parties must be 21+, and the recipient must not exceed their possession limit.

Do medical patients get higher possession limits in Missouri?

Yes. Medical patients can possess 6 ounces per 30 days compared to 3 ounces per transaction for recreational users. A physician can authorize even higher limits if medically necessary. Medical limits are tracked on a rolling 30-day basis.

Missouri Cannabis Limits — 3 oz & 18 Plants

Legal Disclaimer: This information reflects Missouri cannabis law as of April 2026 and is for educational purposes only. It is not legal advice. Laws and regulations change — always verify current rules with the Division of Cannabis Regulation or a qualified attorney. Cannabis remains illegal under federal law.

Last verified: March 2026

Recreational vs. Medical Limits

Missouri sets different possession limits for recreational and medical cannabis users. Both are defined in Article XIV of the Missouri Constitution:

Category	Recreational (21+)	Medical (with card)
Flower	3 ounces per transaction	6 ounces per 30 days (expandable)
Home plants	6 flowering + 6 non-flowering + 6 clones (18 total, cultivation card required)
Tax rate	6% excise + up to 3% local	4%
Minimum age	21+	18+

Missouri uses Marijuana Equivalency Units (MMEs): 1 MME = 3.5g flower = 1g concentrate = 100mg THC edible. Cultivation card required for home growing ($56.27).

The MME System Explained

Missouri uses Marijuana Equivalency Units (MMEs) to standardize limits across different product types. This is critical to understand because your possession limit applies across all product forms, not separately for each type.

Product Type	1 MME Equals
Dried flower	3.5 grams (1/8 ounce)
Concentrate	1 gram
Edible (THC content)	100 milligrams THC

How MMEs Work in Practice

The recreational limit of 3 ounces (84 grams) translates to approximately 24 MMEs. Here are some examples of what 24 MMEs could look like:

All flower: 84 grams (3 ounces) of dried cannabis
All concentrate: 24 grams of concentrate
All edibles: 2,400mg of THC in edible form
Mixed: 1.5 oz flower (12 MMEs) + 8g concentrate (8 MMEs) + 400mg edibles (4 MMEs) = 24 MMEs

The MME system is how the state's seed-to-sale tracking ensures you stay within limits. When you purchase at a dispensary, the system calculates your running MME total. Medical patients are tracked on a 30-day rolling basis; recreational purchases are tracked per transaction.

Adults may purchase up to three ounces of dried, unprocessed marijuana or its equivalent per transaction.
Missouri Constitution, Article XIV, Section 2

Recreational Limits in Detail

Per transaction: 3 ounces (84g) of flower or equivalent
No daily cap on transactions: The limit is per transaction, not per day. However, dispensaries may flag unusual purchase patterns
At home: You may possess more than 3 ounces at your residence, but accumulated from legal transactions
On your person in public: Up to 3 ounces

Medical Limits in Detail

Standard allotment: 6 ounces (approximately 48 MMEs) per 30-day period
Physician expansion: Your certifying physician can authorize higher limits if medically necessary, documented in the patient registry
Rolling window: The 30-day limit is tracked on a rolling basis, not calendar month
No per-transaction limit: Medical patients can purchase their full allotment in a single visit if desired

What Happens If You Exceed Limits

Missouri takes a graduated approach to possession violations:

Amount Over Limit	Classification	Penalty
Up to 2x the legal limit	Civil fine	$250–$1,000
More than 2x the legal limit	Class D felony	Up to 7 years / $10,000

The jump from a civil fine to a Class D felony at the 2x threshold is steep. For recreational users, that means going from 3 ounces (legal) to 6+ ounces (felony territory) is a difference of just one extra transaction's worth. Know your limits. For full penalty details, see our Penalties page.

Gifting Rules

Adults 21+ may gift cannabis to other adults 21+ without compensation:

Gifts must be genuinely free — no hidden transactions, barter, or "donation" schemes
Both parties must be 21+
The gift must not exceed the recipient's possession limit

Transport and Storage

In a vehicle: Cannabis should be kept in a sealed container, ideally in the original dispensary packaging, and stored in the trunk or a locked compartment
At home: Secure storage is recommended. If you have minors in the home, keep cannabis in a locked container
No open containers in vehicles: Similar to open container alcohol laws, do not have unsealed cannabis products accessible in the passenger compartment

Visitors: Same Limits Apply

Out-of-state visitors have the same possession limits as Missouri residents. Any valid government-issued ID proving you are 21+ is accepted. Missouri also allows delivery to non-residents — including hotels.

Are You 21 or Older?

Missouri Cannabis Possession Limits