Cold Emergency in Boston
Mayor Wu declared a cold emergency in the City from Friday, February 3, through Sunday, February 5.

City reminds residents about marijuana rules before Dec. 15 legalization

On Thursday, the Commonwealth of Massachusetts will recognize marijuana as a legal substance for adults 21 and over.

BOSTON - On Thursday, the Commonwealth of Massachusetts will recognize marijuana as a legal substance for adults 21 and over, and the City of Boston reminds residents of the following rules and standards that are to be enacted with the new law:

Possession of Marijuana

  • Adults may carry up to one ounce of marijuana in public. Five grams of that may be a marijuana concentrate.
  • Adults cannot have more than ten ounces of marijuana in their residence.

Growing Marijuana

  • Each resident in the state can grow up to six plants, but there can be no more than 12 plants in a household. Adults must grow plants in their primary residence in a locked or secured location.
  • Plants cannot be visible from a public space without the use of binoculars, an aircraft or other visual aids.

Medical Marijuana

Smoking in Boston

  • Residents and visitors cannot smoke in public parks in Boston. This includes marijuana and tobacco.
  • "No smoking" means residents cannot inhale, exhale, burn or carry any:
    • lighted cigar, cigarette, or pipe,
    • lighted or vaporized substance in any manner or form.
    • This includes marijuana, even if it's used for medical reasons.

Additional Restrictions

  • The marijuana law prevents adults from consuming marijuana in a public place where smoking tobacco is prohibited. The law allows for a fine of up to $100 for each offense.
  • Under the law, "marijuana products" include:
    • edible products and beverages
    • topical products and ointments, and
    • oils and tinctures.
  • Under the law, resident cannot have an open container of marijuana or marijuana products in their motor vehicle. Offenders can be fined up to $500 for each offense.
  • "Open container" means a package of marijuana or marijuana products with a broken seal, or with some of the contents removed. Residents must keep an open container in a locked glove compartment or trunk.
  • The new law doesn't change the existing state laws for operating a vehicle under the influence of marijuana. It's still illegal, and subject to the same fines and penalties.

For additional information, visit, contact Boston 311, or view the legislation for marijuana legalization.

  • Last updated:
Back to top