Missouri Constitutional Right to Home Marijuana Cultivation

Article XIV of the Missouri Constitution, adopted by Amendment 3 in 2022, authorizes registered adults age 21 or older to cultivate up to six flowering marijuana plants, six nonflowering plants over 14 inches, and six clones under 14 inches for non-commercial use. No more than twelve flowering plants may be at a single residence at one time. Plants and any harvest beyond three ounces must be in a locked space at one private residence and not visible by normal unaided vision from a public place. Cultivators must hold a Department of Health and Senior Services registration card and pay a $100 annual fee. The constitutional right preempts local bans, though reasonable, non-prohibitive zoning is permitted.

Unregistered cultivation, exceeding plant limits, visibility from public view, or unsecured storage can result in civil penalties, registration revocation, and potential criminal charges for amounts beyond personal limits.