What still needs checking
- October 2026 tax and visitor provisions supersede older Connecticut explainers.
- Dispensary implementation of new visitor access and documentation should be checked directly before travel.
Possession and use
Adults 21 or older may carry up to 1.5 ounces of cannabis. Up to five ounces may be stored at home or in a locked glove box or trunk, rather than carried openly. Adult retail purchases are limited to one ounce of cannabis flower or its equivalent per transaction. Medical patients have a separate monthly allotment, currently up to five ounces. Public consumption follows tobacco-smoking restrictions and local rules; possession permission does not make every location usable.
Medical access
Connecticut residents with a certifying practitioner may register in the medical marijuana program. From October 1, 2026, qualifying patients and caregivers registered in another state may purchase from a Connecticut medical dispensary under the state's visiting-patient rules. They must still meet the program's documentation and purchase requirements; an out-of-state card alone is not permission to bring cannabis over a border. Adults 21 or older can also use adult-use stores.
Home growing
Adults 21 or older may grow three mature and three immature plants at home, with a maximum of 12 plants per household. Plants must be grown indoors and not be visible from public view; access must be restricted to people under 21. Medical patients have also been permitted to grow under the state program. Landlord, lease and local rules may add constraints. Count mature and immature plants separately rather than assuming six mature plants per adult.
Where to buy
Connecticut maintains licensed adult-use retailers and medical dispensaries. Verify the establishment's state license and whether it serves adult-use shoppers, medical patients or both. A sale is subject to product-equivalency limits as well as the transaction cap; possession at home is not itself a retail transaction allowance. Medical consumers should bring the program documents required by the dispensary, especially during the new visiting-patient rollout.
Taxes and price
Effective October 1, 2026, Connecticut replaced potency-based cannabis excise calculations with a flat 10.75% cannabis tax on adult-use retail sales. The state's 6.35% sales tax and a 3% municipal tax also apply. Medical marijuana remains outside the adult-use cannabis excise structure. Older articles quoting per-milligram tax rates describe the prior system; use the Department of Revenue Services page for the current treatment.
Travel and public places
Do not transport cannabis across state lines, even if both states authorize possession or a visiting patient can buy after arrival. Connecticut's new out-of-state medical purchase option does not change federal interstate restrictions. Keep cannabis within the vehicle-storage rules, avoid impaired driving and check smoke-free and municipal restrictions before use. A locked glove box or trunk can satisfy a storage rule but does not make cross-border transport lawful.
Sources and remaining checks
We checked the sources below on the date shown above. Rules may have changed since then. Check the current rules before making a decision, and read the remaining questions noted in this guide.
- Connecticut Cannabis Knowledge Base: medical and adult-use differences. Read 23 Oct 2026; carry, home storage, transaction and medical limits.
- Connecticut medical marijuana program. Read 23 Oct 2026; patient program and visiting-patient change effective Oct 1 2026.
- Connecticut visiting patient information. Read 23 Oct 2026; out-of-state patient conditions.
- Connecticut cannabis: what is in effect now. Read 23 Oct 2026; home-grow limits; page may contain older rollout chronology.
- Connecticut Department of Revenue Services cannabis tax. Read 23 Oct 2026; Oct 1 2026 10.75% flat tax, 6.35% sales, 3% municipal.
- Connecticut: can an out-of-state patient transport cannabis across state lines?. Read 23 Oct 2026; interstate movement remains prohibited.
No professional legal review is claimed. Check official sources and the verification notes below.