Montana has fully legalized cannabis for both recreational and medical use, operating under a voter-approved system that regulates how weed can be purchased, possessed, and grown statewide. Adults 21 and older are allowed to legally buy marijuana from licensed dispensaries, while registered patients have additional access through the state’s medical cannabis program. This page explains Montana’s current marijuana legality, including recreational and medical rules, possession limits, home cultivation allowances, and key restrictions that still apply under state law. For readers who want to compare Montana’s cannabis laws with other regions, see our comprehensive breakdown of cannabis regulations by location across U.S. states, major cities, and countries worldwide in the Cannabis Laws by Location guide.
Table of Contents
Is marijuana legal in Montana
1. Recreational Marijuana
- Legalization: Approved via Initiative 190 in November 2020.
- Legal Since: January 1, 2022.
- Age Restriction: Legal for adults 21 years and older.
- Possession Limits:
- Up to 1 ounce (28 grams) of marijuana.
- Eight grams of cannabis concentrate, maximum.
- Home Cultivation:
- Allowed: 2 mature plants and 2 seedlings per individual.
- Household maximum: 4 mature plants and 4 seedlings.
2. Medical Marijuana
- Legal Since: 2004, under the Montana Medical Marijuana Act.
- Qualifying Conditions: Includes chronic pain, cancer, PTSD, epilepsy, and others.
- Patient Requirements:
3. Restrictions
- Prohibited Activities:
- Public consumption.
- Use on federal property.
- Driving under the influence.
- Employment & Housing:
- Employers can enforce drug-free policies.
- Landlords may restrict usage on their premises.
Summary: Marijuana is legal in Montana for both recreational and medical use, regulated under strict state guidelines with limitations on possession, use, and cultivation.
