Michigan Legal Weed: What You Can and Cannot Do

Michigan’s recreational marijuana laws let adults 21 and older possess up to 2.5 ounces in public, keep up to 10 ounces at home, grow up to 12 plants per household, and buy from state-licensed dispensaries, but they also keep marijuana off public property, out of the workplace at the employer’s discretion, and completely illegal to carry across state lines. The rules below cover what you can do, where you can do it, and what it costs when you step outside the limits.

How Much You Can Possess

If you are 21 or older, you can carry up to 2.5 ounces of marijuana on your person or while traveling, and no more than 15 grams of that total may be in concentrate form.¹ At home you can keep up to 10 ounces, plus whatever your plants produce. Anything over 2.5 ounces stored at home has to be secured in a container or area with functioning locks.²

Growing at Home

Each household may grow up to 12 marijuana plants for personal use, no matter how many adults live there.¹ The grow area has to be enclosed and secured with locks or similar devices, and the plants cannot be visible from any public place without binoculars or other optical aids.² In practice, outdoor grows need tall fencing or opaque barriers, and indoor grows should stay behind locked doors. Breaking the security or visibility rules while staying within the 12-plant limit is a civil infraction with a maximum $100 fine.³

Buying From a Dispensary

Recreational purchases happen at retail stores licensed by Michigan’s Cannabis Regulatory Agency.⁴ Bring a valid government-issued photo ID proving you are at least 21. Michigan does not require state residency, so visitors can buy using a passport, military ID, or out-of-state driver’s license. The per-transaction limit matches the personal possession cap: 2.5 ounces, with no more than 15 grams in concentrate.

Every retail purchase carries a 10% marijuana excise tax on top of Michigan’s standard 6% sales tax, bringing the effective rate to roughly 16% before any local additions.⁵

Gifting to Another Adult

You can give up to 2.5 ounces of marijuana (with no more than 15 grams in concentrate) to another adult 21 or older, as long as no money or anything of value changes hands.¹ The transfer also cannot be advertised or promoted to the public. That second condition is where people get into trouble. “Free eighth with every T-shirt purchase” promotions are exactly the workaround the law targets, because the marijuana is effectively being sold even if the receipt says otherwise.

Where You Can and Cannot Use It

Consumption in any public place is illegal. No parks, sidewalks, parking lots, concert venues, sporting events, or businesses open to the public.² Schools from preschool through 12th grade, school buses, and correctional facilities are off-limits for both possession and consumption. The default legal spot is your own home or another private residence where the property owner allows it.

Consumption Lounges

Michigan carves out one exception. Municipalities can authorize licensed consumption establishments where adults 21 and older pay an entry fee or membership and consume on-site.⁶ These lounges cannot sell marijuana directly, though adjacent suites that let you buy in one room and consume in another are allowed. Availability depends entirely on whether your local government has opted in, so lounges remain uncommon across much of the state.

Federal Property Is Off-Limits

National forests, military installations, federal courthouses, post offices, and any other federally controlled land within Michigan operate under federal law, where marijuana is still a Schedule I controlled substance. Possession on federal property is a federal misdemeanor carrying up to one year in jail and a $1,000 fine for a first offense, regardless of what Michigan law says. This catches people off guard at places like Sleeping Bear Dunes National Lakeshore or federal buildings in downtown Detroit.

Driving and Transporting Marijuana

Marijuana in your car has to be enclosed in a case and placed in the trunk. If your vehicle does not have a trunk, the case has to go somewhere not readily accessible from the passenger area.⁷ A bag tossed in the back seat of an SUV does not meet that standard. Behind the last row of seats or in a locked glove compartment is safer; the trunk of a sedan is the simplest.

Nobody in the vehicle can consume marijuana while it is on a public road. Driving under the influence is prosecuted as Operating While Intoxicated under the same statute that covers alcohol-impaired driving. A first offense is a misdemeanor punishable by up to 93 days in jail, a fine between $100 and $500, up to 360 hours of community service, and a license suspension of up to 180 days.⁸⁹ Unlike alcohol, there is no universally accepted THC blood-level equivalent of a 0.08 BAC, so officers rely heavily on observed impairment and field sobriety tests.

At Work and in Rental Housing

Legalization does not require your employer to tolerate marijuana use in any form. The law expressly allows employers to maintain drug-free workplace policies, run pre-employment screenings, and discipline or fire workers who test positive.² That applies even when the use happened off-duty, off-site, and fully within state law. A medical marijuana card provides no additional protection against workplace consequences. One partial consolation: medical marijuana patients fired for a positive test generally remain eligible for unemployment benefits.

Landlords can prohibit smoking or vaping marijuana on their property through lease terms, and many do because of fire risk and odor complaints in multi-unit buildings. Michigan law draws a line, though: a lease cannot prohibit a tenant from lawfully possessing marijuana or consuming it by methods other than smoking, such as edibles, tinctures, or capsules.¹⁰ So if your lease says “no marijuana whatsoever,” the smoking ban is enforceable but the edible ban likely is not.

Do Not Cross State Lines

Crossing any state border with marijuana is a federal offense, even if the neighboring state has also legalized recreational use. Federal law treats marijuana as a Schedule I substance, and transporting it across state lines violates the Controlled Substances Act regardless of quantity or form. This applies to driving into Ohio or Indiana, flying out of a Michigan airport, and mailing or shipping products. The risk is highest at airports and border checkpoints, where federal jurisdiction is more actively enforced. Visitors who buy legally should plan to use everything before leaving the state.

Penalties for Going Over the Limits

Michigan treats quantity violations on a sliding scale rather than jumping straight to criminal charges. The tiers are built around multiples of the amounts the law allows:

Within allowed amounts but breaking another rule, such as failing to lock up a home stash: civil infraction, up to $100 fine, and the marijuana is forfeited.³
Up to twice the allowed amount, for example carrying up to 5 ounces in public: first violation is a civil infraction with up to a $500 fine; second up to $1,000; a third or subsequent becomes a misdemeanor with up to a $2,000 fine.³
More than twice the allowed amount: misdemeanor, with imprisonment off the table unless the violation was habitual, willful, and for a commercial purpose, or involved violence.¹¹

The forfeiture provision matters more than most people realize. Even at the lowest tier, law enforcement takes the marijuana. If you have a large home grow that slightly exceeds 12 plants, losing the entire crop stings more than the $100 fine.

Clearing Old Marijuana Convictions

If you have a misdemeanor marijuana conviction for conduct that is now legal, Michigan provides a specific path to get it set aside. The Attorney General’s office directs applicants with misdemeanor marijuana offenses to a dedicated expungement process separate from general criminal record clearing.¹²

Michigan also implemented an automatic expungement system beginning in April 2023 that seals certain eligible records without requiring an application. For convictions that do not qualify for the automatic process, you can petition the court. Picking up a new conviction during the waiting period disqualifies you from clearing the earlier one, so staying clean through the entire window matters.¹²

1
Michigan Legislature. Michigan Code 333.27955 – Lawful Activities by Person 21 Years of Age or Older
2
Michigan Legislature. Michigan Code 333.27954 – Scope of Act
3
Michigan Legislature. Michigan Code 333.27965 – Violations and Penalties
4
Michigan Legislature. Michigan Code 333.27002 – Cannabis Regulatory Agency
5
Michigan Legislature. Michigan Regulation and Taxation of Marihuana Act
6
Michigan Department of Licensing and Regulatory Affairs. Michigan Marihuana Administrative Rules
7
Michigan Legislature. Michigan Code 750.474 – Transportation or Possession of Usable Marihuana
8
Michigan Legislature. Michigan Code 257.625 – Operating Motor Vehicle While Intoxicated
9
Michigan State Police. Impaired Driving Law
10
Michigan Courts. Scope of Michigan Regulation and Taxation of Marihuana Act
11
Michigan Courts. Penalties for Violation of the MRTMA
12
Michigan Attorney General. Expungement Assistance – Other Crimes