In Michigan, an adult 21 or older can buy up to 2.5 ounces of cannabis flower in one dispensary transaction. That is about 71 grams. No more than 15 grams of that total can be marijuana concentrate, and edibles follow separate limits.
Medical Marijuana Purchase Limits Per Month: State Rules and Buying Guide
The cap is set per transaction, not per day, under the Michigan Regulation and Taxation of Marijuana Act. Individual stores can add their own daily limits on top of the state rule, so the real answer depends on the shop as well as the statute.
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The legal limit in grams, broken into standard sizes
Michigan law allows a licensed retailer to sell one customer up to 2.5 ounces of marijuana in a single sale. The 2.5-ounce figure has been the adult-use purchase cap since licensed sales began in December 2019. Here is what it looks like on a menu:
Buy Limits on Edibles and Concentrates: How Much You Can Get
- 2.5 ounces = 70.87 grams (shops round to 71)
- 1 ounce = 28 grams
- Half ounce = 14 grams
- Quarter ounce = 7 grams
- Eighth ounce = 3.5 grams
Flower, pre-rolls, and shake all count by weight against the same 71 grams. A five-pack of half-gram joints uses 2.5 grams of your allowance, the same as a 2.5-gram bag of loose flower.
How the limit splits across product types
Flower and pre-rolls
You can spend the whole 2.5 ounces on flower if the store has the stock. Buying one-ounce jars instead of eighths often drops the price per gram.
Concentrate
Concentrate carries its own sub-cap of 15 grams. Wax, shatter, live resin, hash, and vape cartridges count toward that number, and they also count against the 2.5-ounce total. Buy 15 grams of concentrate and your flower allowance for that transaction is gone.
Edibles and infused products
Edibles are measured by package weight and total milligrams, not by flower grams. Michigan's possession framework allows up to 16 ounces of solid infused product, 36 fluid ounces of liquid, and 7 grams of gaseous product. Many shops cap edibles per transaction by package count instead.
Does a medical card change the gram limit?
No. A registered patient can also buy up to 2.5 ounces in one provisioning center visit. The difference shows up at home, where patients and caregivers hold larger possession allowances than adult-use customers.
Caregivers buying for patients should bring registration paperwork. Some stores limit how many patient orders a caregiver can fill in one visit.
What happens at the counter
Bring a government ID that proves you are 21 or older. Medical patients 18 and older need a valid Michigan medical marijuana card.
Staff weigh each item and the point-of-sale system totals your order against the 2.5-ounce cap. If the cart goes over, the budtender removes items until it fits. You can buy the rest on a later visit.
Michigan does not run a statewide database of adult-use customer purchases. The per-transaction cap is enforced by the retailer, while the state tracks store inventory through its seed-to-sale system.
Pitfalls that cost you time or get you refused
- Treating 71 grams as a daily allowance. It is per transaction. Repeat same-day visits are a store policy call, and staff can say no.
- Forgetting the 15-gram concentrate cap. Three 5-gram jars fit. Four do not.
- Buying for friends. Handing cannabis to anyone under 21, or reselling without a license, is a crime in Michigan.
- Crossing state lines with a purchase. Moving cannabis between states is illegal under federal law, even into states where it is legal.
- Confusing store limits with home limits. Adults can keep up to 10 ounces at home, but they cannot buy 10 ounces in one trip.
How to plan a max-value run
Decide your flower-to-concentrate split before you shop. If you want the full 2.5 ounces of flower, skip the wax jar, since one gram of concentrate eats the same allowance.
Ask about daily limits before you build a large order. Policies vary from store to store, and one question at the counter saves a second trip.
Keep your receipt until you get home. It shows the purchase was legal if anyone asks.
FAQ
Can I buy 2.5 ounces, leave, and come back the same day?
State law caps each transaction, not each day. Dispensaries can refuse repeat same-day sales. Stockpiling past your home possession limit is where buyers get into legal trouble.
Is the gram limit the same for every product?
No. Flower and concentrate share the 2.5-ounce total, with concentrate capped at 15 grams. Edibles follow separate weight and milligram limits.
Can one person buy for a group?
No. Each adult 21 or older buys for themselves with their own ID. Registered caregivers are the exception.
What is the maximum at Pop's Cannabis?
Pop's follows Michigan law: 2.5 ounces of flower, or 15 grams of concentrate, or a mix that stays under both caps in one transaction.
The short version
Plan for 71 grams of flower per visit, 15 grams of concentrate, or a combination under 2.5 ounces. Check the store's daily policy, keep your receipt, and do not carry cannabis across state lines.