How Much Weed You Can Buy and Carry in Massachusetts

In Massachusetts a shop can sell an adult up to two ounces of flower in one transaction, and an adult can carry up to two ounces and keep up to ten ounces at home. Concentrates and edibles are counted against flower by set equivalents. Before April 2026 the limit was one ounce.

What a shop can sell you

A Marijuana Retailer may not knowingly sell more than two ounces of Marijuana or its combined dry weight equivalent in Marijuana concentrate or Edibles to a retail customer per day(CCC order).

A Marijuana Retailer may not sell to an individual more than two ounces of Marijuana or its dry weight equivalent in Marijuana concentrate or Edibles per transaction(CCC order).

Two ounces of flower is equivalent to 10 grams of active THC in concentrate(CCC order).

Two ounces of flower is equivalent to 1,000 milligrams of active THC in edibles(CCC order).

Topicals and ointments are not subject to the daily sales limit(CMR sales rule).

A Marijuana Retailer shall refuse to sell Marijuana to any Consumer who is unable to produce valid proof of government-issued identification(CMR sales rule).

Those lines come from the Commission's Administrative Order No. 6, issued April 19, 2026, which set the interim retail limits. The regulation text in 935 CMR 500.140(3)(a) and (4)(c), in the version effective September 11, 2026, carries the same two-ounce figure. Two ounces is about 56.7 grams. If you are buying a mix of products near the limit, ask the shop how it will total them.

What changed

The new law changed the adult-use statute to 2 ounces or less of marijuana, or the equivalent amount of marijuana products as determined by the Commission(session law).

Daily purchase limits increased immediately on April 19 from 1 to 2 ounces of cannabis(CCC release).

The Commission said its regulations under 935 CMR.500 will now be updated to formally reflect the increase(CCC release).

What you can carry and keep

If you are over 21 years old, you may possess up to two ounces of marijuana on your person, except that not more than ten grams of marijuana may be in the form of marijuana concentrate(CCC FAQs).

In your home, you may possess up to 10 ounces of marijuana, and any amount over two ounces kept in your residence must be secured by a lock(CCC FAQs).

Failure to keep marijuana in excess of two ounces locked up within the home may be punished by a civil penalty of up to $100 and forfeiture of the marijuana(CCC FAQs).

The new law struck the words "1 ounce but not more than 2" and inserted the words "2 ounces but not more than 3."(session law)

That section sets a civil penalty of not more than $100 and forfeiture for possessing more than the limit outside the home, so the band now runs from more than two ounces up to three. Before April 2026 it ran from more than one ounce up to two. The Commission's pages we read give the carry limit and the ten-gram concentrate cap, and give no separate carry figure for edibles, so we do not state one.

Medical patients

Patients and caregivers may continue to purchase up to 10 ounces of flower, or up to 1.9 ounces of concentrate, regardless of its THC content(CCC bulletin).

That was not part of the 2026 change. The 60-day supply page explains the medical limit, and the medical card guide has the steps to a card.

Growing

The law allows an individual over 21 years of age to grow up to six plants in their home, and the maximum number of plants that may be grown in a residence is 12 plants(CCC FAQs).

Plants must not be visible from a public place without the use of binoculars, aircraft or other optical aids(CCC FAQs).

An individual cannot produce cannabis-based extracts or concentrates at home with any liquid or gas, other than alcohol, that has a flashpoint below 100 degrees Fahrenheit(CCC FAQs).

The Commission's page lists a civil penalty for growing more than 6 but not more than 12 plants. It does not say what applies to larger grows, so ask a lawyer if that is your situation. The rest of the rules are on the Massachusetts weed laws page, and the pre-roll sizes page has the gram conversion.

Short answers

How much weed can you buy at once in Massachusetts?

A retailer may not sell an individual more than two ounces of marijuana, or its dry weight equivalent in concentrate or edibles, per transaction(CCC order).

How much weed can I have in my house in Massachusetts?