A Massachusetts cannabis label carries more genuinely useful information than the strain name does, and almost nobody reads past the strain name.
Every product on our shelf in Athol carries the same set of required signals, because the Commonwealth specifies them. Once you know what you are looking at, a label takes about ten seconds to read and tells you most of what you need.
The universal symbol
Massachusetts requires a standard symbol on cannabis products to identify, at a glance, that a package contains cannabis. It is not decoration and it is not branding — it is a regulatory requirement, and it exists so that a package is identifiable as cannabis to somebody who has never seen that brand before.
Its practical value is at home rather than in the shop. A package in a kitchen cupboard that is clearly marked is a package that will not be mistaken for ordinary confectionery. That is the entire point of it, and it is the reason the statutory warning about keeping product out of reach of children sits on every label beside it.
Milligrams and percentages are not the same measurement
This is the most common source of confusion, and it is worth being precise about.
Edibles and tinctures are labelled in milligrams. You will see mg per serving and mg per package. These are absolute amounts.
Flower and concentrates are labelled as a percentage. That is a proportion of the mass of the product, not an amount.
A 100mg package of gummies and a 25% flower are not comparable figures, and trying to reason across them produces nonsense. Compare edibles to edibles by milligrams, and flower to flower by percentage.
The Massachusetts edible limits
Under 935 CMR 500.150, an edible sold in Massachusetts is capped at 5.5mg THC per serving, and a package at 20 servings or 110mg total.
Two things follow from that. First, a single serving is already a small, defined unit — the regulation has done part of the dosing work for you. Second, if you see a product advertised at a substantially higher per-serving figure, it did not come from a licensed Massachusetts retailer.
Note that 5mg per serving and 100mg per package are the figures most people quote, including a good deal of published material. Those are common shelf doses. They are not the legal limits, and the difference matters if you are counting.
Total THC, THCA, and why the big number can mislead
Flower labels frequently show a high THCA figure and a low THC figure, which looks contradictory on a product that will obviously be intoxicating.
THCA is the acid form present in the raw plant. Heat converts it to THC — when you smoke it, vaporize it, or bake with it. Total THC accounts for that conversion. That is why the two numbers differ and why total THC is the one to read.
Worth saying plainly: the THC percentage is a poor predictor of whether you will enjoy a product. Freshness, how it was grown and cured, and terpene content all bear on the experience. A well-grown 20% is very often a better buy than a poorly grown 28%. See THCA and THC in our glossary.
Ratio products
A label reading 1:1 or 2:1 CBD:THC tells you a proportion, not a potency. A 2:1 product contains twice as much CBD as THC. It does not tell you how much of either is in the package — that is the milligram figure, separately.
Both numbers matter. A 1:1 product at 5mg each is a very different package from a 1:1 product at 50mg each.
Batch numbers, the QR code and the COA
Every package carries a batch or lot number. This is not clutter — it is the thread that ties the package in your hand back to the specific harvest and the specific lab test it came from.
The QR code usually reaches the Certificate of Analysis, the laboratory document reporting cannabinoid content and contaminant screening for that batch. The Commission issued an administrative order in April 2025 requiring licensees to upload Certificates of Analysis into the state tracking system, which is why this is increasingly consistent across products.
If you want to understand what is actually being tested for, we cover it in how cannabis is tested in Massachusetts, and there is a short definition at certificate of analysis.
The required warnings
The block of small text you have learned to skip is prescribed. It states that the product is for adults 21 and over, that it should be kept out of reach of children, that it may impair concentration, coordination and judgment, that you should not drive under its influence, that edible effects may be delayed by two hours or more, that it has not been analyzed or approved by the FDA, and that it may be illegal outside Massachusetts.
The delayed-onset line is the one genuinely worth reading. It is there because the two-hour gap is the mechanism behind most uncomfortable edible experiences. See edibles dosing and effects.
What we can and cannot tell you about it
Everything above is factual and we are happy to walk through any of it at the counter.
What our staff will not do is tell you what a product will do for you. Massachusetts regulation — 935 CMR 500.105(4)(b)(7) — prohibits a licensee from representing that its products have curative or therapeutic effects absent clinical evidence the Commission has accepted. So we will tell you what is in the package, how the format behaves, and how to read every number on it. We will not tell you it will help with anything.
Massachusetts Cannabis Advisory: For use only by adults 21 years of age or older. Keep out of reach of children. Also keep out of reach of pets. Marijuana can impair concentration, coordination and judgment. Do not operate a vehicle or machinery under the influence of this drug. The impairment effects of edible marijuana may be delayed by two hours or more. This product has not been analyzed or approved by the U.S. Food and Drug Administration (FDA). This product may be illegal outside of Massachusetts.
Visit Hometown Harvest
243 Main Street, Athol, MA. Open Monday through Saturday 10 AM to 9 PM, Sunday 11 AM to 6 PM.
Related reading
Written by the Hometown Harvest team in Athol, Massachusetts. This is general information about Massachusetts law, not legal advice, and it reflects the law as we read it in July 2026. Statutes change. Where a decision matters, read the statute itself — we have linked it — or speak to a lawyer.