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Be in the know! Learn more about Connecticut laws around buying, carrying, and using cannabis; the way it impacts your mental and physical health; guidelines; and signs of problem use.

Get the facts on Connecticut's cannabis laws, how cannabis impacts your health, guidelines for families, and signs of problem use.







Know the Laws

Cannabis is legal for adults 21+, but there are limits regarding possession and the growing of marijuana plants. Just like with tobacco and alcohol, it is illegal for anyone under 21 to purchase, use, or possess cannabis.


An individual may possess and use up to 1.5 oz of cannabis.


Driving under the influence of cannabis is against the law. It is against the law for both drivers and passengers to use cannabis in a vehicle while it is operating.


Individuals in Connecticut may also store up to 5 oz in a locked container at home or transport it in a locked glovebox or trunk.


Medical marijuana patients and all adults 21+ can grow up to 3 mature and 3 immature plants at home (up to 12 total plants per household).


Driving across state lines with cannabis is illegal and can lead to federal criminal charges.


It is illegal for adults to provide cannabis to minors.


Some jobs may prohibit an employee from using cannabis, even when they are off the clock.

What to Know: Smoking & Vaping

In general, you won’t be able to smoke or vape cannabis anywhere you can’t smoke or vape tobacco.

Cities and towns may enact ordinances to regulate whether and where cannabis can be consumed in public.

At home, landlords may prohibit smoking and vaping, but they generally may not prohibit possession or consumption of other forms of cannabis.

Cannabis use will be prohibited in state parks, and on state beaches and waters.

Store it Locked!

Like many other substances, cannabis is toxic for children and pets. Make sure children cannot access cannabis products in any form. A safe storage plan can help lower the risk of accidental ingestion.

Be safe. Remember to:

  • Keep cannabis in a secure and locked place. Cannabis products should be out of sight, and out of reach of children and pets to avoid accidental ingestion.
  • Store cannabis products in their original containers and keep the label. Labels on cannabis products from licensed cannabis establishments will have important information, including how much THC is in the product.
  • Consider using a safe or lockbox with a combination lock or keypad.
  • Make a list of cannabis products in your home. Knowing exactly what cannabis products you have in your home can help with medical treatment in case of accidental ingestion.

Get Your FREE Lockbox!

Safe storage of adult use cannabis is essential. Locking containers are available to all legal-age Connecticut residents. Want more information about lockboxes? Contact your Regional Behavioral Health Action Organization (RBHAO) to access a free lockbox.
Find Your RBHAO

If a child ingests cannabis, get help immediately. Call Poison Control at


If a pet ingests cannabis, call Animal Poison Control at


Health Risks

Cannabis is often viewed as harmless when compared to other drugs. However, cannabis can cause many physical and mental issues, especially in developing teens. Such issues can include:

  • Problems with memory and focus
  • Increased aggression
  • Poor lung health (from smoking or vaping cannabis)
  • Risky behavior
  • Weaker coordination and thinking skills
  • Schizophrenia and other long-lasting mental disorders
  • Marijuana Use Disorder

If you use cannabis, tell your doctor. Some medications have harmful interactions with cannabis that can put your health at risk.

Mental Health

Studies link marijuana use to depression, anxiety, suicide planning, and psychotic episodes. If you are using cannabis to help you deal with stress or anxiety, talk with your doctor. For some people, cannabis use can make mental health worse.

Some cannabis products have very high potencies of THC (tetrahydrocannabinol). THC is the psychoactive compound in cannabis that creates a high. The Centers for Disease Control & Prevention (CDC) also report that daily or near daily use of high-THC cannabis products can cause disorientation, anxiety, and even psychosis.

Learn more about marijuana and mental health.

How to Safely Dispose of Cannabis Waste

It's important to know how to safely dispose of cannabis, cannabis products, and cannabis waste. These items may contain high levels of THC, and can be dangerous to both children and animals if ingested.

  • Cannabis waste should be mixed with other waste material, like coffee grounds or kitty litter, so it can’t be used.
  • The waste mixture should be in a taped and sealed container, like an empty yogurt cup, and thrown into regular trash.
  • Do not flush cannabis products or packaging down the sink or toilet.
  • If cannabis packaging is recyclable, throw EMPTY and CLEAN containers away with other recyclables.
  • If the packaging is not recyclable, throw the EMPTY package away with the regular trash.

If you think your cannabis use is disrupting your daily life, or causing problems at work or at home, or if you crave cannabis, you can call the hotline to find out about healthcare and substance use services in your community.