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Missouri Statewide Rule

Missouri Constitutional Right to Home Marijuana Cultivation

Few RestrictionsApplies statewide across Missouri (2026)

Key Facts

Authority
Article XIV Section 2
Flowering plants
Six per person
Per residence cap
Twelve flowering plants
Annual fee
$100
Visibility
Locked, not visible
Last verified: September 5, 2026Source: Missouri Revisor of Statutes

Summary

Missouri Constitution Article XIV grants registered adults age 21 and over the right to cultivate up to six flowering plants at home with a $100 state registration. Localities cannot prohibit cultivation but may impose limited restrictions.

Possessing, transporting, planting, cultivating, harvesting, drying, processing, or manufacturing up to six flowering marijuana plants, six nonflowering marijuana plants (over fourteen inches tall), and six clones (plants under fourteen inches tall) provided the person is registered with the department for cultivation of marijuana plants under this section, provided: a. The plants and any marijuana produced by the plants in excess of three ounces are kept at one private residence, are in a locked space, and are not visible by normal, unaided vision from a public place; and b. Not more than twice the number of allowable plants under paragraph (b) of this subdivision are kept in or on the grounds of a private residence at one time.

Source: Missouri Revisor of StatutesView official code

Full Breakdown

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.

Violations & Penalties

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.

Frequently Asked Questions

Can a Missouri city ban home marijuana cultivation?
No. The constitutional right under Article XIV preempts outright local bans on registered home cultivation. Cities may apply reasonable zoning that does not effectively prohibit personal grows.
How do I register to grow cannabis at home in Missouri?
Apply for a personal cultivation registration card with the Department of Health and Senior Services and pay the $100 annual fee. Registration is required before cultivating any plants.

Sources

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