Connecticut Marijuana Laws (2026): Possession, Limits and Where to Buy

By James Buddsey · Updated October 15, 2026

Yes. Under Connecticut marijuana laws, adults 21 and older can legally possess up to 1.5 ounces of cannabis on them, keep up to 5 ounces locked at home or in a locked glove box or trunk, buy from licensed retailers and grow up to six plants at home. Stores sell up to 1/2 ounce of flower or its equivalent per transaction, and since October 1, 2026 recreational purchases carry a 10.75% state cannabis tax plus 6.35% sales tax and a 3% municipal tax.

Connecticut legalized adult-use cannabis in 2021 with Public Act 21-1, the Responsible and Equitable Regulation of Adult-Use Cannabis Act (RERACA), and retail sales began on January 10, 2023. The legislature has amended the law every year since, and 2026 brought the biggest changes yet: a new flat cannabis tax, stronger THC drinks in liquor stores, and access for out-of-state medical patients. This guide covers what the law says as of October 2026, with links to the statutes and state agencies behind each rule. It is general information, not legal advice.

Connecticut Cannabis Laws at a Glance

Is Marijuana Legal in Connecticut?

Yes, for adults 21 and older. Governor Ned Lamont signed Public Act 21-1, based on Senate Bill 1201, in 2021. Possession became legal on July 1, 2021, and the Department of Consumer Protection let hybrid retailers begin adult-use sales on January 10, 2023.

Lawmakers have amended the law repeatedly, including Public Acts 22-103, 23-79, 24-76, 25-101, 25-166, 26-8 and 26-100, all listed on the DCP cannabis laws page. Public Act 26-8 also renamed “marijuana” as “cannabis” throughout the state’s statutes.

Adult-use cannabis is still illegal under federal law, which matters on federal property, on flights and across state lines. See our federal marijuana law guide.

How Much Cannabis Can You Possess and Buy in Connecticut

Connecticut’s possession rule, in C.G.S. 21a-279a, has two tiers for adults 21 and older:

• 1.5 ounces of cannabis plant material, or an equivalent amount of cannabis products, on your person.
• 5 ounces in a locked container at your home or in a locked glove box or trunk of your car.

Cannabis you grow yourself under the home-grow law does not count toward the possession limit, a change that took effect July 1, 2023.

Purchase limits are set by DCP. Adult-use customers may buy up to 1/2 ounce of raw flower or the equivalent per transaction, a limit that took effect December 1, 2023. Registered medical patients are not subject to per-transaction limits and may buy up to 5 ounces per month.

Penalties for possessing too much

• Over the limit but under 5 oz (or under 8 oz locked at home or in the car): $100 fine for a first offense, $250 after that.
• 5 oz or more (or 8 oz or more locked at home or in the car): $500 fine for a first offense; a class C misdemeanor after that.
• Ages 18 to 20, under 5 oz: $50 fine for a first offense and $150 after that, plus signing a statement on cannabis health effects.
• Under 18: a written warning and referral to youth services for a first offense. No one under 18 may be arrested for simple possession under this section.

Where You Can and Cannot Use Cannabis in Connecticut

DCP’s guidance on where you can use cannabis sets out the basics:

• You cannot smoke or vape cannabis anywhere you cannot smoke or vape tobacco.
• Cannabis use is prohibited in state parks and on state beaches and waters.
• Cities and towns may pass ordinances on whether and where cannabis can be used in public, so check local rules.
• Landlords may ban smoking and vaping, but generally may not ban possession or consumption of other forms of cannabis.

Private homes, with the owner’s permission, are the safe choice. Do not use cannabis in a vehicle: the state’s protections for medical patients specifically exclude use in a moving vehicle, a workplace or school grounds.

Buying Cannabis in Connecticut: Stores, ID and Products

• Who can buy: Any adult 21 or older with valid government photo ID. Connecticut residency is not required for adult-use purchases.
• Where: Adult-use retailers and hybrid retailers, which serve both medical and adult-use customers. DCP keeps a map of licensed locations. Medical-only dispensary facilities serve registered patients.
• Potency: Adult-use flower is capped at 35% THC by dry weight. Public Act 26-8 would have removed the cap, but Public Act 26-100 restored it, according to the legislature’s Office of Legislative Research. Edibles keep the existing 5 mg THC limit, now with a testing variance of up to 10%. Medical patients have no potency caps.

THC Drinks, Delta-8 and Hemp Products in Connecticut

Connecticut treats intoxicating hemp products as cannabis. DCP says high-THC hemp products and any products containing synthetic cannabinoids, which includes most delta-8 and delta-10 products, may only be sold by licensed cannabis establishments. Public Act 25-101 added age-21 verification for sales of hemp flower.

THC-infused beverages have their own rules, updated by Public Act 26-8. Beginning October 1, 2026:

• Package stores with an infused-beverage endorsement may sell drinks with up to 5 mg of THC per container.
• Dispensaries, hybrid retailers and adult-use retailers may sell drinks with up to 10 mg of THC per container.
• Buyers must be 21 or older.

Federal law is changing too. The federal hemp redefinition bars synthesized and converted cannabinoids from November 12, 2026 and caps naturally derived hemp products at 0.4 mg total THC per container from December 11, 2026. See our federal guide.

Medical Marijuana in Connecticut

The Medical Marijuana Program is run by DCP. To register, you must be a Connecticut resident certified by a Connecticut-licensed physician, physician assistant or APRN who is treating you for a qualifying condition. There is no registration fee for patients or caregivers. According to DCP, registered patients get:

• tax-free purchases of medical and adult-use products at dispensaries and hybrid retailers,
• a 5-ounce monthly purchase allowance and a 5-ounce possession limit, instead of 1.5 ounces,
• access to products not sold in the adult-use market, such as pills and sublinguals, and no potency caps, and
• the right to grow at home from age 18.

Public Act 25-101 allows written certifications of 6 months, 18 months or 2 years and lets dispensaries grant 90-day extensions or temporary certifications in some cases, according to the act.

Out-of-state medical patients

Beginning October 1, 2026, patients and caregivers registered in another state or jurisdiction may buy medical cannabis at a hybrid retailer or dispensary facility in Connecticut. They must fill out a DCP verification form before each purchase and show a valid out-of-state medical credential plus government photo ID. Under Public Act 26-8, a qualifying out-of-state patient who follows Connecticut law is protected for possessing up to 5 ounces.

Growing Cannabis at Home in Connecticut

Adults 21 and older, and registered medical patients 18 and older, may grow up to 3 mature and 3 immature plants, with a cap of 12 plants per household, according to DCP. Adult-use home growing became legal on July 1, 2023; patients could grow from October 1, 2021.

• Plants must be grown indoors and must not be visible from the street.
• You must grow at your primary residence, in a space people under 21 cannot access.
• Homegrown cannabis cannot be sold.

Driving and Cannabis in Connecticut

Connecticut has no per se THC limit. Under C.G.S. 14-227a, no one may drive while under the influence of intoxicating liquor, any drug or both. The numeric blood limits in the statute apply only to alcohol, so a cannabis DUI is based on evidence of impairment. In cannabis cases, the statute lets the court take judicial notice that cannabis can impair motor function, reaction time and judgment.

Keep cannabis sealed and, above 1.5 ounces, locked in the glove box or trunk.

Taking Cannabis Across State Lines and to Airports

• Neighboring states: New York and Massachusetts both have legal adult use, but carrying cannabis across any state line is a federal crime.
• Flying: TSA follows federal law and refers cannabis found at screening to local police. Do not bring cannabis to Bradley International Airport or onto any flight.
• Federal property: Federal buildings and military installations follow federal law.

Connecticut Cannabis Taxes in 2026

The tax changed on October 1, 2026. The state’s tax based on milligrams of THC was replaced with a flat rate, according to the Department of Revenue Services. Adult-use purchases now carry three taxes:

• a 10.75% statewide cannabis tax on gross receipts,
• the 6.35% state sales and use tax, and
• a 3% municipal cannabis tax.

DRS’s own example: a $22.00 chocolate bar carries $1.40 in sales tax, $0.66 in municipal tax and $2.37 in cannabis tax, for a total of $26.43. Before October 1, 2026, the state cannabis tax was charged per milligram of THC. Registered medical patients pay no tax on medical or adult-use products bought at a dispensary or hybrid retailer.

What Changed in Connecticut Cannabis Law Recently

• Flat cannabis tax (Oct. 1, 2026): 10.75% of gross receipts replaces the THC-based tax.
• Out-of-state patients (Oct. 1, 2026): Registered patients from other states can buy medical cannabis in Connecticut.
• THC drinks (Oct. 1, 2026): Up to 5 mg per container in endorsed package stores and 10 mg in cannabis stores.
• Public Act 26-100 (2026): Restored the 35% THC cap on flower and reversed Public Act 26-8’s exemption of hemp-derived minor cannabinoids such as CBN and CBG from the cannabis definition.
• Hemp manufacturing (Dec. 1, 2026): Hemp manufacturers may make certain cannabinoids and intermediate hemp derivatives above 0.3% THC, but only to sell to licensed cannabis businesses, under Public Act 26-8.
• Federal rescheduling (2026): In April 2026 the Justice Department moved marijuana held under a state medical marijuana licence to Schedule III. Adult-use cannabis remains in Schedule I while a broader proceeding is on hold.

Connecticut Marijuana Laws FAQ

More State Cannabis Law Guides

Compare Connecticut with its neighbors in our New York and Massachusetts guides, or the rest of New England in Vermont, Maine and New Hampshire. Browse every state cannabis law guide or read our summary of federal marijuana law in 2026.

Neighboring state guides: New York · Massachusetts · Rhode Island · All state cannabis laws

General information about Connecticut cannabis law as of October 2026, not legal advice.