Is weed legal in Massachusetts?

Recreational status

Recreational cannabis is legal in Massachusetts. (M.G.L. c. 94G, § 7: Personal Use of Marijuana)

M.G.L. c. 94G, section 7(a) protects a person 21 years of age or older from arrest, prosecution, or penalty for possessing, using, purchasing, processing, or manufacturing marijuana within the amounts set in that subsection.

The protection here has edges. It is written as freedom from penalty for a listed set of acts within stated amounts, so the figures further down this page are the boundary of it rather than separate housekeeping.

Medical status

A full medical cannabis program runs in Massachusetts, serving patients the program registers. (M.G.L. c. 94I, § 2: Medical Use of Marijuana Program)

M.G.L. c. 94I, section 1 defines a 'debilitating medical condition' as cancer, glaucoma, HIV-positive status, AIDS, hepatitis C, amyotrophic lateral sclerosis, Crohn's disease, Parkinson's disease, multiple sclerosis, and other conditions a registered healthcare professional determines in writing -- an open-ended list with no THC-percentage cap on the marijuana a medical marijuana treatment center or establishment may sell, so this is recorded as comprehensive rather than low-thc-only.

A patient's route starts with a written certification and then a registration, and the counter checks the second of those. Two of the things that registration gets you sit further down this page, in what you may grow and in who the program will serve.

Hemp-derived products

Massachusetts permits the sale of hemp-derived products that meet its definition of hemp. (M.G.L. c. 94G, § 7: Personal Use of Marijuana)

M.G.L. c. 94G, section 1 defines 'Hemp' as a Cannabis plant with a delta-9-THC concentration of no more than 0.3% on a dry-weight basis and excludes hemp from the definition of 'marijuana' the chapter otherwise regulates; M.G.L. c. 128, section 116 defines 'Hemp' and 'Industrial hemp' the same way for the agricultural chapter. Neither registered source bars any particular hemp product form, but section 7(f)'s protection from arrest for possessing, producing, selling, or delivering hemp runs only to a person 21 years of age or older. No registered Massachusetts source restricts which hemp-derived consumer products may be sold at retail: M.G.L. c. 128, § 116 is a definitions section for the cultivation licensing sections that follow it, and the 21-and-over protection in c. 94G, § 7 governs marijuana rather than hemp.

Because the statute writes hemp out of the definition of marijuana, these products sit outside the chapter the Cannabis Control Commission administers, and the shop selling them is not a marijuana establishment. The rules a dispensary works under do not follow the product across the aisle.

Home cultivation

Massachusetts allows an adult to grow up to 6 plants at home. (M.G.L. c. 94G, § 7: Personal Use of Marijuana)

The 6 plants are per person, capped at 12 total plants cultivated on the premises of a primary residence at once, under M.G.L. c. 94G, section 7(a)(2). Separately, M.G.L. c. 94I, section 2(d) lets the commission issue a hardship cultivation registration to a qualifying medical patient, or their caregiver, whose access to a treatment center is limited by financial hardship, physical incapacity, or distance, authorizing plants 'sufficient to maintain a 60-day supply' rather than a fixed number.

The ceiling sits on the address rather than on the person, so a third adult under one roof adds nothing to what may be grown there. A patient's route past that number is a separate registration you apply for, and holding a certification does not carry it by itself.

Possession and purchase limits

The possession limit, as Massachusetts states it: 2 ounces or less of marijuana, or the equivalent amount of marijuana products, generally; or up to 10 ounces of marijuana within the person's primary residence. (M.G.L. c. 94G, § 7: Personal Use of Marijuana)

The general limit was raised from 1 ounce to 2 ounces by 2026 Mass. Acts c. 65, section 29, effective April 19, 2026 -- already in force as of this record's last_reviewed date. Marijuana concentrate is separately capped at 5 grams within the 1-ounce figure that applied before that date; the source's own text carries both the pre- and post-amendment wording side by side.

On buying, Massachusetts states: A marijuana retailer may not sell more than two ounces of marijuana, or its dry weight equivalent in marijuana concentrate or edibles, to an individual per transaction or per day. (935 CMR 500.140: Additional Operational Requirements for Retail Sale)

935 CMR 500.140(3)(a) treats 1 ounce of marijuana flower as equivalent to 5 grams of active THC in concentrate (including tinctures) or 500 milligrams of active THC in edibles; topicals and ointments are not subject to a daily sales limit.

One number is doing two jobs here: two ounces is what you may carry in public and also the most a store may hand you in a day. The daily half follows the customer rather than the shop, so a second store that afternoon is still the same day.

Minimum age

You must be 21 or over to buy without a medical card. (M.G.L. c. 94G, § 7: Personal Use of Marijuana)

935 CMR 500.140(2)(a) requires a marijuana retailer to verify by identification that an individual is 21 years of age or older before admitting them to the premises, consistent with section 7's age gate.

Massachusetts sets no minimum age for a patient. (935 CMR 501.010: Written Certification of a Debilitating Medical Condition for a Qualifying Patient)

935 CMR 501.010(11) lets a Qualifying Patient younger than 18 receive a Written Certification, with a parent or legal guardian's written consent, either for a Life-limiting Illness (diagnosed by two Massachusetts-licensed physicians) or, with the same two-physician diagnosis, for a Debilitating Medical Condition that is not life-limiting. M.G.L. c. 94I, section 1 defines 'Qualifying patient' with no age of its own -- unlike 'Personal caregiver,' which that same section defines as 'a person who is at least 21 years old' -- so the omission of any age from the patient definition is deliberate rather than a gap.

The 21 is checked at the door, before you are inside the store, and no certification changes what that door asks. Where the patient program is silent about age, the decision passes to the people the regulations put in charge of it rather than to a number.

Where you can buy

You can buy lawfully from a licensed recreational dispensary, a licensed medical dispensary and a licensed delivery service. (M.G.L. c. 94G, § 1: Definitions)

M.G.L. c. 94I, section 1 (via section 2) authorizes sale to a card holder by a 'medical marijuana establishment' or 'medical marijuana treatment center,' recorded as medical-dispensary. 935 CMR 500.002 defines a 'Marijuana Delivery Operator,' a license type distinct from a Marijuana Retailer that is authorized to 'purchase at Wholesale... sell and deliver Finished Marijuana Products... directly to Consumers,' recorded as licensed-delivery; a 'Marijuana Courier' by contrast may deliver but is not authorized to sell directly to consumers.

The Commission licenses every one of those channels, so a seller who cannot show a license is not one of them. Delivery here is a license of its own, which is why the name on the van may not match the name on any shop.

The Massachusetts store list names every licensed location this site holds a record for.

Federal law applies here too, and it is not the same. Read what federal law says about weed.