Licensed vs. black market cannabis can look identical in a jar, but how each was grown, tested and sold is a very different story. In Michigan, licensed products move through a state system of licenses, lab testing and detailed labels. Illicit products skip all of it. Here's how the two compare, why the illicit market hangs on, and how to make sure the store you visit is the real thing.
What illicit cannabis means in a legal state
Adult-use cannabis has been legal in Michigan since voters approved it in 2018, and licensed stores now sell to adults 21 and older. In a legal state, illicit doesn't describe cannabis itself. It describes cannabis sold outside the state's licensing system.
That covers unlicensed storefronts, sellers who take orders by text or on social media, and street sales. It also covers products made with no state oversight of how they were grown, extracted or packaged. Some hemp-derived THC products raise legal questions of their own. Our guides to how delta-8 compares with delta-9 and the federal hemp changes explain where those stand.
Why the illicit market persists
- Price. Licensed products carry real costs, including lab testing, compliance and taxes. Michigan adds a 10% excise tax to adult-use purchases, on top of the 6% sales tax. As of October 2026, growers and processors also owe a 24% wholesale tax on their first sale of adult-use marijuana to a store. That tax took effect January 1, 2026. Untaxed, untested product can undercut those prices, but it skips the testing, labeling and oversight described below.
- Access. Each Michigan city, village or township can ban cannabis businesses or cap how many it allows. That's why some areas have no store at all, and the nearest one can be a long drive away.
- Habit. Some buyers stay with a seller they have used and trusted for years.
The risks of illicit cannabis
Contaminants you can't see
A 2018 systematic review lists microbes, heavy metals and pesticides as the common contaminants of cannabis. The same review found little data on how often they occur or how much harm they cause. That uncertainty is the point: with an untested product, you have no way to know what's in it.
Vape products show how badly things can go wrong. When the EVALI outbreak of vaping lung injuries hit in 2019 and 2020, the CDC tied most cases to THC vaping products. Products bought informally, from friends, family or dealers, were especially implicated. Vitamin E acetate, an additive, was strongly linked to the outbreak. By February 18, 2020, 2,807 hospitalized cases or deaths had been reported to the CDC.
Missing or misleading labels
The label is your only window into what you're buying, and without a lab test, any potency number on an illicit package is a guess. A 2025 study compared 88 cannabis products bought from licensed and unlicensed retailers in New York. Unlicensed products carried far less essential information, such as THC potency, and fewer safety features, such as health warnings. They also had more youth-appealing designs, and some carried other states' universal symbols or edible warnings printed on products that weren't edibles.
No recourse
Licensed products come with a paper trail. The producer's license number, the package tag and the test date tie each package to a specific maker and lab. If something is wrong, you can go back to the store that sold it. With an illicit seller, there's no record to follow and no one accountable.
Outside the law
In Michigan, commercial cannabis sales run through businesses licensed by the state's Cannabis Regulatory Agency. Adults 21 and older may pass along up to 2.5 ounces to another person 21 or older, and concentrate can account for at most 15 grams of that gift. It has to be a genuine gift, with nothing received in exchange and no advertising or public promotion of it. A seller who takes money without a license is working outside those rules, and you're relying on their word alone. For possession and purchase limits, see our Michigan cannabis law guide.
How Michigan's licensed system works
- Licenses. The Cannabis Regulatory Agency (CRA) licenses and regulates the state's cannabis businesses, and local governments decide whether stores can open in their communities.
- Traceable packages. Every package names the business that produced it, with that business's license number and a package tag, plus the harvest date where one applies.
- Testing. Michigan cannabis testing is part of the paper trail: every label identifies the testing lab and the date of the test.
- Clear labels. Packages display THC and CBD levels, Michigan's universal THC symbol and the warnings the state requires.
- ID checks. Licensed stores must check a valid driver's license or government photo ID that proves you're at least 21 before every sale.
- Safety information. Each customer must be offered a pamphlet listing the Poison Control hotline, with at least two warnings about the risks of cannabis for young people.
- Honest marketing. Licensed businesses can't advertise with false or misleading statements or health claims, and adult-use products can be marketed only to adults 21 and older.
- Limits. One adult-use sale can't exceed 2.5 ounces, including a 15-gram ceiling on concentrate, and infused products have to stay within the state's THC caps.
- Child-resistant edibles. Edibles go in opaque, child-resistant packages. They can't take the shape of a person, an animal or a fruit, and the word "candy" is off-limits.
Licensed vs. black market cannabis: side by side
| Licensed Michigan store | Illicit seller | |
|---|---|---|
| Lab testing | Tested, with the lab and test date on the label | No way to know |
| Label | THC and CBD content, warnings, universal symbol, package tag | Often incomplete, or borrowed from another state |
| Age check | ID checked before every sale | No oversight |
| Edible packaging | Opaque and child-resistant, with no candy shapes or wording | No standards enforced |
| A problem with a product | Contact the store where you bought it | No recourse |
| Taxes | State excise and sales taxes collected | None collected |
| Legal standing | Sold by a state-licensed business | Outside the licensed system |
Nearly every protection in the left column exists because the state requires it. None of them follows the product once it leaves the licensed system.
How to tell if a dispensary is licensed, and red flags
An unlicensed dispensary can look like a real store from the street, but a licensed one is easy to recognize once you know the signs:
- A permanent storefront that checks your ID before you buy anything.
- Products with complete Michigan labels, including the universal THC symbol and the testing lab.
- Staff who can answer questions about where products come from.
- A store you can return to if something is wrong.
Red flags worth walking away from:
- No ID check, or sales to anyone who asks.
- Packages with no label, a handwritten label or another state's symbol.
- Edibles in candy-style wrappers, or shaped like animals or fruit.
- Prices far below every licensed store in the area.
- Health promises on the package or in the pitch, since licensed marketing in Michigan can't make health claims.
- Sales from a car, an apartment or a social media account.
If you're unsure about a seller, remember that the CRA is the state agency in charge of cannabis licensing. Our tips for choosing a dispensary near you cover the rest.
Label details that mark a licensed product
Michigan requires every cannabis package to be sealed and labeled. On a licensed product, look for:
- The producer's name and license number
- A package tag, plus the harvest date and strain where they apply
- The net weight
- THC and CBD amounts, along with the required notice that real values can vary by 10%
- The activation time
- The testing lab's name and the test date
- Michigan's universal THC symbol
- A warning that it's illegal to drive a motor vehicle under the influence of marijuana, and the national Poison Control line, 1-800-222-1222
- A 21+ line, a boxed pregnancy and breastfeeding warning, and the words "Keep out of reach of children"
Our guide to decoding a cannabis label walks through each line.
Shopping with confidence at High Society
At High Society, we work with vendors we trust, and the products we stock have cleared Michigan's testing requirements. Bring a valid government-issued photo ID or a passport, and expect an ID check when you arrive. If something you bought isn't right, call the store or stop by the location where you bought it.
Find your nearest store, browse its menu and schedule a pickup time, in store or curbside. Adult-use shopping starts at 21; with a medical marijuana card, the minimum age is 18.
