Montana Cannabis Laws
(MT)Montana legalized recreational cannabis in 2020. Adults can possess 1 oz and grow 4 mature plants.
Montana is one of the states with legal recreational marijuana. View all recreational states →
Key Statistics
Quick Facts
Legal
Legal
21+
Dec 31, 2020
Recreational Cannabis Laws
1 oz
1 oz
4 mature plants, 4 seedlings per adult
Medical Cannabis Program
1 oz usable
Cancer, glaucoma, HIV/AIDS, Crohn's, epilepsy, MS, chronic pain, PTSD, and others
Need help getting your medical card? Complete guide to getting a medical marijuana card .
Federal vs Montana State Law
Federal Law
Cannabis remains a Schedule I controlled substance under the federal Controlled Substances Act. Possession, distribution, and cultivation are federal crimes regardless of state law.
Montana State Law
Status: Recreational & Medical Legal. Adults 21+ may possess and purchase cannabis at licensed dispensaries.
Federal employees, federal contractors, and anyone crossing state lines should follow federal rules regardless of state legalization.
Frequently Asked Questions
Official Resources
For the most up-to-date and authoritative information, visit the official state resource:
Montana Official Cannabis WebsiteSources
- Montana Official Cannabis Resource (accessed Dec 6, 2025)
Information last verified: Dec 6, 2025. Cannabis laws change frequently — always verify current rules with official state sources.
Quick Reference
- State
- Montana (MT)
- Status
- Recreational & Medical Legal
- Rec Limit
- 1 oz
- Med Limit
- 1 oz usable
- Min Age
- 21+
- Home Grow
- 4 mature plants, 4 seedlings per adult