Cannabis Laws in Missouri

STATE CANNABIS GUIDE

Cannabis Laws in Missouri

Is weed legal in Missouri? Possession limits, home grow rules, medical program and dispensary info.

Recreational
Legal Status
3 oz
Possession Limit
6 plants
Home Growing
280
Dispensaries
Last reviewed: May 2026 — Verified against official state sources
Key Facts — Cannabis in Missouri

Is Weed Legal in Missouri?

Cannabis is currently recreational in Missouri (MO). Passed Amendment 3 in November 2022.

Adults in Missouri may possess up to 3 oz of cannabis.

Possession Limits in Missouri

CategoryLimit / Rule
Public Possession3 oz
Home Growing6 plants
Medical ProgramActive
Dispensaries~280 licensed dispensaries

Missouri voters passed Amendment 3 in November 2022, legalizing recreational cannabis with sales beginning in February 2023. Adults 21+ may possess 3 ounces in public and grow 6 plants at home. The Department of Health and Senior Services (DHSS) regulates the cannabis industry. Missouri includes automatic expungement for prior nonviolent cannabis convictions.

Possession Rules & Penalties

Possession over 3 oz (up to 6 oz) is a civil infraction ($250 fine). Over 6 oz remains a criminal offense. Delivery without a license is a felony.

Medical Cannabis Program

Missouri's medical cannabis program, established via Amendment 2 in 2018, allows qualifying patients to possess up to 4 oz per 30 days and cultivate up to 6 plants.

Background & Recent Updates

Missouri legalized recreational cannabis via Amendment 3 in November 2022, with retail sales beginning February 2023. Missouri had an existing medical program since 2018.

Missouri generated over $100 million in cannabis tax revenue in 2023. The state allows existing medical licensees to convert to dual-use, creating rapid market expansion.

Cannabis & Drug Testing in Missouri

Despite recreational legality in Missouri, cannabis remains federally illegal. Employers can — and many do — still require drug tests.

💧
Urine
3–30 days
💈
Hair
Up to 90 days
💬
Saliva
1–3 days
🩸
Blood
1–7 days

The most common pre-employment test in Missouri is the urine test, which can detect THC metabolites for up to 30 days in regular users. See: How long does THC stay in urine?

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