Missouri Cannabis Laws 2026: The Modern Era
2026 (March)
2026 (March): The Missouri Supreme Court issues a narrowing definition of expungement eligibility, though over 140,000 records have already been cleared.
Federal Rescheduling Impact
2026 (April): Federal Rescheduling Impact: Following the shift to Schedule III, Missouri dispensaries have reported increased investment in lab-testing technology to meet new federal research guidelines.
2026 (Current Status)
2026 (Current Status): Adults 21+ can possess up to 3 ounces of flower. Public consumption remains a civil fine, though recent bills have sought to increase penalties.
The Adult-Use Breakthrough: Amendment 3 (2022–2024)
2022
2022: Voters approve Amendment 3 with 53% support, legalizing recreational use and mandating automatic expungements.
2023
2023: Retail sales begin in February, less than three months after the vote. Sales hit $1 billion in just the first year.
2024
2024: The state begins issuing "Micro-licenses" to ensure smaller entrepreneurs have a place in the market.
Medical Foundations (2014–2018)
The Missouri marijuana laws timeline shifted toward medical access mid-decade.
2014
2014: Missouri passes a limited "CBD oil" law for intractable epilepsy.
2018
2018: Voters pass Amendment 2 with 65.5% support, creating a robust medical program that allowed for flower and home cultivation.
Prohibition and Decriminalization (1930s–2014)
1930s
1930s: Missouri criminalizes cannabis as part of a national wave of prohibition.
2014
2014: The state legislature passes a bill to decriminalize first-time possession of up to 10 grams, a precursor to the Missouri cannabis legal history victories at the ballot.