Montana Law Center

Green Guide Montana

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Montana at a glance

Program: Medical + adult use
Legal allotment: 1 oz usable · 4 plants
Qualifying conditions: 14 listed conditions
Out-of-state cards: Not accepted

The figures above are re-checked against Montana's official program sources every month.

Montana's medical marijuana program is administered by the Department of Revenue's Cannabis Control Division. Patients with a debilitating medical condition may obtain a written certification from a physician and register as a cardholder. Montana also permits adult-use cannabis. Registered cardholders may possess up to 1 ounce of usable cannabis and cultivate up to 4 mature plants / 12 seedlings.

Official Program

Laws of Montana

Every law and official source for Montana, each linked to the page that publishes it.

Official Montana cannabis law & rules

Allotment Trainer

1 oz usable · 4 plants Learn how it works and track your balance here.

Licensed places in Montana

15 licensed places are on record in {name} — licensed shops, consumption lounges, cannabis clubs and cannabis-friendly venues.

Bloom Montana — Culbertson
Bloom Montana — Libby
A+ Medical Dispensary — Trout Creek

See every Montana listing

Key Rules

Possession

Registered cardholders may possess up to 1 ounce of usable cannabis and cultivate up to 4 mature plants / 12 seedlings.

Transportation

Cannabis must be in its original packaging and stored out of reach of the driver during transport.

Employment

Montana law does not require employers to accommodate medical cannabis use. Consult your employer's policy and an attorney.

Travel

Cannabis may not be taken across state lines. Doing so violates federal law.

Renewal

Registry cards must be renewed annually.

Qualifying Conditions

CancerGlaucomaHIV / AIDSMultiple sclerosisCrohn's diseaseEpilepsyPost-traumatic stress disorder (PTSD)Severe or chronic painCachexiaSevere nauseaSevere or persistent muscle spasmsAmyotrophic lateral sclerosis (ALS)Alzheimer's diseaseIntractable pain

Frequently Asked Questions

How much can I possess?

Up to 1 ounce of usable cannabis and up to 4 mature plants / 12 seedlings.

Can I grow my own?

Yes — up to 4 mature plants and 12 seedlings under the medical program.

Is recreational use also legal?

Yes; the medical card offers tax benefits (4% medical tax rate).

Montana community board

More MT Physicians Issuing Cannabis Authorizations
A growing number of physicians in Montana are issuing medical cannabis authorizations for patients. This trend was highlighted in an early October 2026 update on state legalization efforts. Increased physician participation helps expand patient access to medical cannabis care across the state.
Regulated, Untamed, and Built to Last: Inside MT Cannabis
A retrospective look at the evolution of Montana's cannabis industry highlights its journey from early medical marijuana days to a fully regulated market. The piece details the legislative battles and regulatory milestones over the past two decades. Check out the full story in [Regulated, Untamed, and Built to Last: Inside Montana Cannabis](https://hightimes.com/news/legalization/montana-cannabis-industry-regulated-untamed/).
June 2026 Cannabis Newsletter & Packaging Rules
The Montana Department of Revenue released its June 2026 Cannabis Newsletter. The update includes proposed revisions to marijuana packaging and labeling rules to implement House Bill 792. Access the newsletter at [Cannabis Regulation](http://revenue.mt.gov/cannabis).

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