A marketing coordinator at a Minnesota cannabis retailer spends a week getting the copy right. No health claims, no imagery that reads as reaching for a younger audience, a clean warning line at the bottom — every content rule anyone mentioned in the interview, covered. Then the actual plan comes together: a highway billboard, maybe a bus bench near downtown, a broader social push to build real awareness heading into a launch. That's the plan that dies first. Not because of what it says. Because Minnesota's cannabis advertising law was never mainly worried about the words. It was worried about how far they'd travel.

Here's what actually governs where a Minnesota cannabis ad is allowed to go, and what happens to a business that gets the reach wrong instead of the content wrong.

Minn. Stat. 342.64, subd. 1 sets seven baseline content rules that apply to every cannabis and hemp business ad, in every medium. An ad can't contain false or misleading statements, can't make unverified health or therapeutic benefit claims, can't promote overconsumption, can't depict anyone under 21 consuming the product, can't use imagery "designed or likely to appeal to individuals under 21 years of age," can't include an image of alcohol or a person consuming alcohol, and can't skip a required warning about impairment and health risks.

That last clause is worth pausing on, because the statute doesn't actually write its own warning label. Clause (7) bars an ad that "does not contain a warning as specified by the office" regarding impairment and health risks — the legislature handed the exact wording to the Office of Cannabis Management rather than putting it in the statute itself. OCM's own published advertising guidance (Guidance Memo GM-2025-07) fills that in with specific required language, including a line telling readers cannabis products aren't evaluated or approved by the FDA and naming risks to pregnant people by name. A business copying language off a competitor's old ad, instead of checking OCM's current guidance, is checking the wrong source for the one clause the statute deliberately left blank.

None of this is the part that kills most ad plans, though. Most marketers can write around seven content rules. What catches people is subdivision 2.

Minn. Stat. 342.64, subd. 2(a) states plainly: "an outdoor advertisement of a cannabis business, a hemp business, cannabis flower, a cannabis product, a lower-potency hemp edible, or a hemp-derived consumer product is prohibited." Not restricted. Not subject to content review. Prohibited, as the default rule, full stop.

The only carve-out sits in paragraph (b): "cannabis businesses and hemp businesses may erect up to two fixed outdoor signs on the exterior of the building or property of the cannabis business or hemp business." Two signs, on the business's own building or its own lot. That's the entire outdoor advertising budget a licensed operator gets under the statute's default rule — no billboards, no bus benches, no transit wraps, no signage on a building the business doesn't occupy, regardless of how clean the copy is.

OCM's own guidance memo spells out just how far that reaches in practice, naming billboards, bench ads, vehicle wraps, feather flags, sandwich boards, neon signs, hanging vinyl banners, inflatables, and even window displays or wrapping visible from outside the store as prohibited outdoor advertising. That list is OCM's interpretation of the statute, not the statutory text itself — worth remembering if a specific format ever sits in a gray area the memo doesn't name directly — but it's the clearest look available at how broadly the office reads "outdoor advertisement," and it reads broadly.

Paragraph (c) carves out one narrow exception: a hemp business may run outdoor ads for goods or services that aren't related to lower-potency hemp edibles, as long as the ad includes no image, description, or reference to the manufacture or sale of those edibles at all. That's a real exception, but a narrow one — it protects a hemp business's ability to advertise an unrelated line of business, not a way around the outdoor-ad ban for anything cannabis-adjacent.

Getting past the outdoor-ad ban doesn't clear the reach question. Subd. 3 adds a second limit for every other medium: a cannabis or hemp business "shall not publish or cause to be published an advertisement... in any print publication or on radio, television, or any other medium if 30 percent or more of the audience of that medium is reasonably expected to be individuals who are under 21 years of age, as determined by reliable, current audience composition data."

That's a compliance obligation with a real evidentiary burden baked into it — a business has to actually have reliable, current audience data before it buys a placement, not just a good-faith guess about who's likely to see it. The statute doesn't say what a business is supposed to do when no such data exists for a given channel, or how current "current" needs to be. That's a genuine gap in the text, not a settled question this piece can answer, and a business relying on stale or informal audience estimates is relying on something the statute doesn't recognize as sufficient.

Subdivisions 4 through 6 handle digital advertising specifically. Unsolicited pop-up ads on the internet are barred outright. Direct advertising — the kind sent straight to a person, like email or text marketing — requires an age-affirmation step first: user confirmation, a birth date disclosure, or a comparable registration method establishing the recipient is 21 or older. And location-based advertising tied to a specific device is barred unless the device's owner has been confirmed to be 21 or older. A cannabis business running geofenced ads around its own store, without that confirmation step in place, is running exactly the kind of targeted digital campaign this subdivision was written to catch.

Subdivision 7 covers something else entirely: advertising by health care practitioners who certify patients for Minnesota's medical cannabis registry program. The content rules are practitioner-specific — no false statements about the registry, no slang ("pot," "weed," "grass"), no claiming an endorsement from the office or the Division of Medical Cannabis, no cannabis flower or paraphernalia imagery, no medical symbol confusing enough to suggest an affiliation with an established medical association.

The consequence for a practitioner who violates it isn't a dollar figure at all. The statute bars a practitioner found by OCM to have violated the subdivision from certifying patients for the registry program going forward — and specifies that OCM's decision on that point is final, not subject to the contested-case hearing procedures that apply elsewhere in state administrative law. That's a sharply different track than everything else in this statute: no civil penalty ceiling, no reconsideration process built into the subdivision itself, just the loss of the specific authority the violation touched, decided once.

For subdivisions 1 through 6, the exposure runs through the same general enforcement authority this newsletter has covered before: Minn. Stat. 342.19, subd. 5(b) lets OCM issue a civil penalty of up to $10,000 for each violation of chapter 342 or its rules, an amount that can also strip out any economic advantage the violation created. Nothing in section 342.64 or 342.19 spells out whether a single non-compliant ad, an entire flawed campaign, or each day it ran counts as one violation for penalty purposes. That's not a settled question this piece can resolve — it's genuinely open on the statute's own text, and it matters a great deal to how large a $10,000-per-violation exposure actually gets.

Here's a distinction worth naming plainly, because a recent piece in this newsletter covered a Minnesota cannabis statute where the answer runs the other way. Minn. Stat. 270C.56, the state's personal-liability statute for unpaid taxes, names the chapters it reaches by number — chapters 295, 296A, 297A, 297F, and 297G, plus two specific sections. Chapter 342 is not on that list. A civil penalty for a bad ad campaign is a liability that runs against the business under chapter 342, not a debt this specific personal-liability statute reaches the way it reaches an unremitted cannabis gross receipts tax. That's not a blanket statement that the people who run a business can never face personal exposure for anything — ordinary corporate-veil principles are a separate body of law this piece isn't covering — but this particular statute, the one that follows a state tax debt past the LLC, simply doesn't name chapter 342 anywhere in its text.

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Minnesota's cannabis advertising rules read, at first pass, like a content code — a list of things an ad can't say. Read the whole section and the center of gravity is somewhere else: two fixed signs on your own building, a 30-percent-under-21 ceiling on every other placement backed by data a business has to actually have, and internet-specific gates on pop-ups, direct messages, and geofencing. The content rules in subdivision 1 are real, and a business still has to clear all seven of them. But the plan that gets built around a highway billboard or a broad social buy fails before content ever becomes the question, because the state answered "how far can this travel" before it ever asked "what does this say."

None of this is legal advice, and a real advertising or signage plan — especially anything close to the outdoor-ad line, or a digital campaign built on third-party audience data — deserves review by a Minnesota attorney familiar with chapter 342, not a newsletter. What this piece can do is point at the right subdivision, so that conversation starts in the right place.

MNCC's own programs don't teach advertising law — that's a job for legal counsel, not a curriculum. What they do teach is the same compliance habit this newsletter keeps coming back to: reading the rule that actually governs a business, not the rule everybody assumes governs it. Explore MNCC's training programs to build that habit on the operations side, where it gets tested every time a marketing plan crosses a desk.

Education as repair means teaching operators to measure their reach honestly, not just their message.

Questions about a specific ad, sign, or campaign belong with a Minnesota attorney and with OCM's own published guidance — the office's advertising guidance memo is the right starting point before any placement goes live.

Say hello anytime: [email protected].

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