MT • United States

Cannabis in Montana

Recreational

Adult-use legal since 2020.

Adult-use legal.

Adult-use age: 21+Medical age: 18+

What this means in Montana

Buy at licensed dispensaries
Adults 21+ can purchase from state-licensed retailers, typically up to an ounce of flower per transaction.
Home cultivation (varies)
Most adult-use states allow some personal cultivation — limits and rules differ by state.
Driving is still off-limits
Open container + impaired driving laws apply. THC-DUI thresholds vary; assume strict.
Public consumption is restricted
Most states prohibit smoking/vaping cannabis in public spaces. Use on private property.

Rules vary by city and county. Possession limits, public-use rules, and home-grow caps should be verified with your state's cannabis control board before relying on this.

What makes Montana different

Montana's distinctive cannabis story

Initiative 190 passed in November 2020 with broad rural and small-town support, making Montana one of the few mountain-west states with legal adult-use cannabis.

Historical milestones in Montana

2026-03
Sales tax revenue at record high
Adult-use programs continue to generate significant state tax revenue, with much earmarked for education and public health.
2025-11
Expungement rollout expands
More states are processing automatic expungement of prior cannabis convictions tied to legalized conduct.

Coming soon: cultivation, sales, and tax rules

We're rolling out per-state cultivation limits, license paths, fees, and tax data one state at a time. Montana is on the list.

See covered states →

Major cities in Montana

Cities layer their own ordinances on top of state law: possession in public, dispensary zoning, on-site consumption. City-level pages for Montana are on the way. Until then, check the local cannabis-control page for your city.

Get involved in Montana

Reform happens when people show up. These national orgs have state chapters or active programs in Montana. Check their state pages for local coalitions.

Other states

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