Connecticut Marijuana Law
Updated September 01, 2026
Current Status: Legalized
In 2021, Connecticut legalized adult-use cannabis for adults age 21 and older through Public Act 21-1. Possession and use within the legal limits became lawful on July 1, 2021.
Public Consumption Laws
Connecticut restricts where cannabis may be consumed. Cannabis generally cannot be smoked or vaped anywhere smoking or vaping tobacco is prohibited, and municipalities may establish additional rules regarding public cannabis consumption. Cannabis consumption is also prohibited in certain locations under state law. Consumers should check local rules before using cannabis in a public area.
Cannabis DUI Laws
Driving while under the influence of cannabis is illegal in Connecticut. State law also prohibits consuming cannabis while operating a motor vehicle. Individuals who drive while impaired by cannabis may face criminal penalties and driver's license consequences.
Cultivation Laws
Adults age 21 and older may grow up to three mature and three immature cannabis plants at home, with a maximum of 12 plants per household. Cannabis must be grown indoors in a secured, locked area that is not visible to the public. Home cultivation for adults age 21 and older became legal on July 1, 2023.
Possession Laws
Adults age 21 and older may possess up to 1.5 ounces of cannabis on their person. They may also possess up to 5 ounces of cannabis in a locked container at their residence or in a locked glove box or trunk of their motor vehicle. Possession above the amounts permitted under Connecticut law may result in penalties.
Brief Legislative History
- 2011: Connecticut enacted Public Act 11-71, which reduced possession of less than one-half ounce of marijuana from a criminal offense to a violation punishable by a fine.
- 2012: Governor Dannel P. Malloy signed Public Act 12-55, An Act Concerning the Palliative Use of Marijuana, establishing Connecticut's medical marijuana program.
- 2021: Governor Ned Lamont signed Public Act 21-1, An Act Concerning Responsible and Equitable Regulation of Adult-Use Cannabis, legalizing adult-use cannabis for adults age 21 and older. Possession and use within the legal limits became lawful on July 1, 2021.
- 2023: Licensed adult-use cannabis sales began in Connecticut on January 10, 2023.
- 2023: Beginning July 1, 2023, adults age 21 and older became eligible to grow up to three mature and three immature cannabis plants at home, subject to a maximum of 12 plants per household and other home-cultivation requirements.
*The information provided in this communication is for general informational purposes only and does not constitute legal advice. For legal advice specific to your situation, please consult a licensed attorney.