Quick answer: Yes, marijuana is legal in Michigan for adults 21 and older, and the state also has a medical program. You can carry up to 2.5 ounces (no more than 15 grams of it as concentrate) and keep up to 10 ounces at home. Home growing is allowed, up to 12 plants per residence.

Last verified: October 20, 2026, against the Michigan Cannabis Regulatory Agency. Laws change, so check the official site before you travel or buy.

Who can buy?

Anyone 21 or older with a valid government-issued photo ID can buy at a licensed adult-use retailer in Michigan, whether you live there or not. Registered medical patients can also buy at medical provisioning centers, and some of those patients are under 21.

Under 21 with no medical card? Err… no. Selling or giving marijuana to someone under 21 is a crime.

Where can you buy?

Only at stores licensed by the Cannabis Regulatory Agency (CRA). Michigan has one of the busiest markets in the country. Stores are common in many cities, but hundreds of local governments have opted out, so availability depends on where you are.

Prices changed in 2026. A new 24% wholesale marijuana tax started January 1, 2026, on top of the existing excise and sales taxes. Industry groups have challenged it in court, and in April 2026 the Michigan Supreme Court told the Court of Appeals to expedite the case. Keep an eye on the news if you’re curious where it lands.

How much can you buy or possess?

• In public: up to 2.5 ounces of marijuana, and no more than 15 grams of that can be concentrate.
• At home: up to 10 ounces, plus whatever your own plants produce. Anything over 2.5 ounces must be kept in a locked container.
• Per purchase: retailers can sell up to 2.5 ounces at a time.
• Gifting: adults can give up to 2.5 ounces to another adult, as long as no money changes hands and it isn’t advertised.

“Free weed with every $50 T-shirt” deals don’t count as a gift. That’s a sale.

Can you grow your own?

Yes. Adults 21+ can grow up to 12 plants at their residence for personal use. That limit is per residence, not per person. The plants can’t be visible from a public place and must be grown in an enclosed, locked area. Landlords can prohibit growing, so check your lease.

Where can you smoke?

At home and on private property where the owner allows it. Using marijuana in a public place is a civil infraction. Some cities have licensed designated consumption establishments, but they’re rare. Smoking in the passenger area of a vehicle on a public road, on school grounds or on federal land is never allowed.

Can you drive after using?

No. Michigan treats driving while impaired by marijuana much like drunk driving. Penalties can include fines, jail and license sanctions. The state hasn’t set a THC blood limit. A state commission concluded that THC levels don’t reliably show impairment, so officers rely on driving behavior, field sobriety tests and drug recognition experts. Michigan’s drugged-driving law also has a zero-tolerance provision that courts have interpreted in several cases, so the simplest rule is the safest: don’t drive high.

Keep marijuana in the trunk or in a closed container out of reach while driving.

Can you take it out of state?

No. Taking marijuana across state lines is a federal crime, even from Michigan into another legal state. Driving across the border into Ohio or Indiana with your Michigan purchases is a bad idea, and so is crossing into Canada, where border agents take cannabis very seriously.

Federal context, as of October 2026: recreational marijuana is still a Schedule I drug under federal law. In April 2026, state-licensed medical marijuana and FDA-approved products were moved to Schedule III. Broader rescheduling was paused on September 29, 2026. Under a November 2025 federal hemp law, intoxicating hemp-THC products such as delta-8 and THCA flower lose their legal status, with the main provisions taking effect December 11, 2026.

Can your employer fire you?

Yes. Michigan’s adult-use law specifically lets employers keep drug-free workplace policies and discipline or refuse to hire people who use marijuana. Employers set their own policies, and the state’s medical law doesn’t require employers to allow use either, so check your employee handbook.

Penalties, briefly

• Using in public: civil infraction, up to $100.
• Possessing more than 2.5 ounces but no more than 5 ounces: civil infraction, up to $500 for a first violation.
• Growing plants that can be seen from a public place: civil infraction.
• Possessing larger amounts, growing far above the limit or selling without a license: this can bring misdemeanor or felony charges.

Want to compare Michigan with other states? Visit our marijuana law hub.

Michigan marijuana law FAQ

Is weed legal in Michigan?

Yes. Michigan voters legalized adult-use marijuana in 2018, and adults 21 and older can legally buy, possess and use it. Michigan has also had a medical marijuana program since 2008.

How much marijuana can you have in Michigan?

Adults 21+ in Michigan can carry up to 2.5 ounces of marijuana, with no more than 15 grams of it as concentrate. At home, you can keep up to 10 ounces plus anything your own plants produce, as long as amounts over 2.5 ounces are locked up.

How many plants can you grow in Michigan?

Michigan allows up to 12 marijuana plants per residence for personal use. They must be in an enclosed, locked space and not visible from a public place.

Can out-of-state visitors buy weed in Michigan?

Yes. Visitors 21 and older can buy at licensed Michigan adult-use retailers with a valid government-issued photo ID. Taking that marijuana back across state lines is still illegal under federal law.

Is there a THC driving limit in Michigan?

No. Michigan has no numeric THC limit for drivers. Police decide whether someone is impaired based on driving, field tests and drug recognition evaluations, and driving while impaired by marijuana is a crime.