Cannabis law in Michigan (2026)
Last reviewed: 9 October 2026
In short: Adults aged 21 or over may possess up to 2.5 ounces of marihuana, keep up to 10 ounces at home and grow up to 12 plants at their residence. Consumption in public places is not authorised.
| Rule | What applies |
|---|---|
| Possession for personal usePersonal use by an adult | Permitted within limits [1] |
| Quantity limitsPersonal use by an adult | Up to 2.5 ounces of marihuana, of which no more than 15 grams may be concentrate; up to 10 ounces within the residence. [1] |
| Growing at homePersonal use by an adult | Permitted within limits [1] |
| Sale to consumersPersonal use by an adult | Licensed retail stores for adults [1] |
| Use or carrying in public placesPersonal use by an adult | Prohibited [1] |
| Medical cannabisPersonal use by an adult | Legal for medical use [1] |
| VisitorsPersonal use by an adult | Not addressed in the source [1] |
| Minimum agePersonal use by an adult | 21 years [1] |
| Driving after cannabis usePersonal use by an adult | The adult-use law does not authorise operating a motor vehicle while under the influence of marijuana, and courts treat it as prohibited. Using marijuana while driving is also not authorised. [1] |
| Purchase limit in licensed shopsPersonal use by an adult | A retailer may not sell an adult more than 2.5 ounces of marijuana in a single transaction, with no more than 15 g as concentrate, and no more than 3 immature plants per transaction. [2] |
Notes
- The benchbook states that possessing more than 2.5 ounces at the residence is not authorised unless the excess is locked away.
- The Act also does not authorise cultivation where plants are visible from a public place without aids, as listed in MCL 333.27954(1)(f).
- The source (a court benchbook) refers to licensed marihuana retailers and establishments but does not describe the licensing scheme; the Cannabis Regulatory Agency pages could not be read (HTTP 403).
- A public place does not include an area designated for consumption by a municipality that has authorised consumption in designated areas not accessible to persons under 21.
- The medical programme runs under the Michigan Medical Marihuana Act and the Medical Marihuana Facilities Licensing Act, which the MRTMA leaves intact. The programme's own rules were not read.
- The benchbook does not mention non-residents or visitors.
Sources
- Michigan Judicial Institute (Michigan courts): 8.14 Scope of Michigan Regulation and Taxation of Marihuana Act (MRTMA) (consulted 9 October 2026) · all sources
- Michigan Office of Administrative Hearings and Rules: Michigan Administrative Code R 420.1 to R 420.1004 (Cannabis Regulatory Agency rules) (consulted 10 October 2026) · all sources
National rules that also apply
These rules are set at national level in the United States and apply here too, alongside the rules above. All national rules for the United States
| Possession for personal use | Criminal offence (source: U.S. Government Publishing Office (govinfo)) |
|---|---|
| Growing at home | Prohibited (source: U.S. Government Publishing Office (govinfo)) |
| Sale to consumers | Prohibited (source: U.S. Government Publishing Office (govinfo)) |
Michigan and neighbouring states
| State | Possession for personal use | Growing at home | Sale to consumers | Use or carrying in public places | Medical cannabis | Visitors |
|---|---|---|---|---|---|---|
| Michigan | Legal for adults 21+, within limits | Yes: up to 12 plants | Licensed retailers | Not allowed in public places | Separate medical programme | Source silent on visitors |
| Illinois | Legal for 21+ within limits | No (medical patients only) | Licensed dispensaries | Banned in public places | Medical programme with dispensaries | Yes, but half the resident limit |
| Indiana | Criminal offence (Class B misdemeanour) | No (criminal offence) | No (dealing is an offence) | — | ⚠ Not yet verified | — |
| Minnesota | Legal for adults 21+, within limits | Yes: 8 plants, max 4 mature | Licensed sellers only | Private property or licensed venues | Medical registry programme | Source silent on visitors |
| Ohio | ⚠ Not yet verified | ⚠ Not yet verified | ⚠ Not yet verified | ⚠ Not yet verified | Medical programme (qualifying conditions) | No residency rule in the definition |
| Wisconsin | Criminal offence (misdemeanour, then felony) | No (felony) | No (felony) | — | ⚠ Not yet verified | — |
More rules in Michigan
- Car speed limitsBuilt-up areas: 25 mph (business district) · Outside built-up areas (single carriageway): 55 mph
- Minimum age for a car driving licenceEarliest age to drive a car supervised: 14 years 9 months (level 1)
- E-bikes and speed pedelecsLegal class: Class 1, 2, 3 (bicycle) · Minimum age: 14+ for Class 3
- FireworksConsumers may buy and use category F2 fireworks: Yes (consumer fireworks; licensed retail) · Minimum age to buy: 18
- Knives and pepper sprayFolding pocket knives: Not named; "dangerous weapon" concealed is banned · Locking or one-handed knives: Former mechanical-opening ban repealed (2017)
- Statutory minimum wageNational statutory minimum wage: Yes · Current adult minimum wage (gross): $13.73 per hour
- Using a mobile phone while drivingHolding a phone while driving banned: Banned · Hands-free use: Hands-free allowed
- Seat belts and child seatsSeat belt compulsory in front seats: Yes · Seat belt compulsory in rear seats: Adults: no; under 16: yes
- Tobacco and nicotine age limitsMinimum age to buy tobacco: 21 · Minimum age to buy e-cigarettes: 21
- Drinking age and alcohol salesMinimum age to buy beer and wine: 21 · Minimum age to buy spirits: 21
- Drink-driving limitsBlood alcohol limit for ordinary drivers: 0.08% · Lower limit for novice or young drivers: Any alcohol (under 21)
Related pages
General information, not legal advice. Rules change: check the official source before you fly or ride.