What are the medical marijuana laws in Missouri?


  • Governor Jay Nixon signed House Bill 2238 – the Missouri Medical Marijuana Bill – to legalize the use of CBD oil to treat persistent seizures. HB 2238 only allows hemp extract that contains at least 5% cannabidiol (CBD) and no more than 0.3% tetrahydrocannabinol (THC).



  • Missouri residents voted yes on Amendment 3 during the November 2022 election, legalizing recreational marijuana possession and use in adults at least 21 years old. The new law will also allow non-incarcerated individuals with non-violent marijuana charges to have their records reviewed and possibly have their convictions expunged.

    In addition, the amendment adds several new benefits for medical marijuana cardholders:

    • Medical marijuana cards are now valid for three years instead of one.
    • Monthly medical cannabis allotment increases from four to six ounces.
    • Employment protections to prevent discrimination if medical cannabis is used during non-work hours away from the worksite.
    • Missouri residency is no longer required to apply.
    • Nurse practitioners can now certify patients.
    • The cost to apply to grow cannabis will decrease from $100 to $50.
  • As of December 8, 2022, consumers are allowed to possess up to three ounces of marijuana but won't be able to purchase it without a medical card in a dispensary until the state issues licenses, expected sometime in 2023.