Medical cannabis is legal in 38 states plus the District of Columbia as of early 2025. Each of those states writes its own rules for qualifying conditions, possession limits, THC caps, and where patients can buy. Below is a medical cannabis laws by state list grouped by program type, followed by what those rules control.
marijuana medical laws by state
Programs change with every legislative session, so treat this list as a starting point. Confirm current details with your state health department before you apply for a card.
Medical Cannabis Laws by State: A Comprehensive Guide
Which States Have Legal Medical Cannabis?
These 38 states and the District of Columbia run full medical cannabis programs. Most require a physician certification, a state card or registry entry, and licensed dispensaries to serve patients.
Medical Cannabis Laws by State vs. Recreational: A Comprehensive Comparison
- Alabama, Alaska, Arizona, Arkansas
- California, Colorado, Connecticut
- Delaware
- Florida
- Hawaii
- Illinois
- Kentucky (dispensaries opened in 2025)
- Louisiana
- Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana
- Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota
- Ohio, Oklahoma, Oregon
- Pennsylvania
- Rhode Island
- South Dakota
- Utah
- Vermont, Virginia
- Washington, West Virginia
- District of Columbia
Which States Have Limited or CBD-Only Programs?
Six states offer only narrow products, low THC caps, or CBD oil. Some run patient registries. Others let people buy CBD with almost no THC and nothing more.
- Georgia: low-THC oil for registered patients.
- Indiana: CBD oil with trace THC for most patients.
- Iowa: a medical program with a strict THC cap per 90 days.
- Tennessee: CBD oil only, with a very low THC limit.
- Texas: the Compassionate Use Program caps THC at 1% for a short list of conditions.
- Wisconsin: no medical program, but CBD oil with trace THC is legal to possess.
Which States Have No Medical Cannabis Program?
Six states have no active medical cannabis law. Patients there cannot register for a card, and THC products stay illegal.
- Idaho: THC products are against state law.
- Kansas: no program and no dispensaries.
- Nebraska: voters passed a medical cannabis measure in 2024, and the rules are still in progress.
- North Carolina: medical cannabis is legal only on Cherokee tribal land.
- South Carolina: no program.
- Wyoming: no program.
What Do State Medical Cannabis Laws Control?
State rules cover far more than legal status. They decide who qualifies, how much a patient can hold, what products are sold, and how a card gets issued.
Qualifying conditions
Common conditions include cancer, chronic pain, epilepsy, PTSD, Crohn's disease, multiple sclerosis, and glaucoma. Some states add autism, opioid use disorder, or anxiety. The lists differ enough that a patient approved in one state may not qualify in the next.
Possession limits
Limits range from a set gram count to a 30-day or 90-day supply. Alaska allows 1 ounce of usable cannabis, while Oklahoma permits up to 3 ounces of flower on hand. Many states pair a total limit with a daily THC dose cap.
THC caps and product types
Some states cap THC per dose or per package. Others allow full-strength flower, vapes, tinctures, edibles, and topicals. Low-THC states keep psychoactive effects to a minimum by law.
Home grow
Plant counts run from zero to 12, and a few states allow only registered patients to grow. Others allow home grow for any adult.
Patient cards and fees
Most states issue a card through a state certifying physician. Fees range from free to about $200, with renewals every one or two years.
How Do You Get a Medical Cannabis Card?
- Check your state's qualifying condition list first.
- See a state-licensed physician, in person or by telehealth where allowed.
- Submit the application and fee to the state program.
- Wait for approval, then shop at a licensed dispensary.
Keep your card and your photo ID on you at the counter. Some states also require the dispensary to log each purchase against your supply limit.
Does a Medical Card Work in Another State?
Most states do not honor out-of-state cards. A short list does, including Arizona, Maine, Nevada, New Hampshire, Oklahoma, Rhode Island, and the District of Columbia. Rules, product limits, and paperwork differ in each, so call the dispensary before you travel.
Why Do These Laws Change So Often?
Ballot measures, legislatures, and court cases reshape the map each year. A state can move from CBD-only to a full program in a single session, or tighten a THC cap with little notice. Federal hemp law, which allows CBD under 0.3% THC, adds another layer that most states follow.
Frequently Asked Questions
Is medical cannabis legal in all 50 states?
No. 38 states plus DC run full programs, six allow limited or CBD-only products, and six have no program.
What is the difference between medical and recreational cannabis?
Recreational states let adults buy without a card. Medical states require a patient certification. Patients often get higher possession limits, lower taxes, and products that are not sold to adult-use buyers.
Does a medical card lower the cost?
In many states, yes. Medical purchases skip some sales or excise taxes, and many dispensaries run patient discounts. Savings depend on the state and the product.
Do I need a card to buy CBD?
No. Hemp-derived CBD with less than 0.3% THC is legal under federal law, though state rules differ on where it can be sold.
Buying Cannabis at a Dispensary as a Medical Patient
Bring your state card and a photo ID. Read the THC and CBD content on the label, and check the batch test date and lab name. Ask about your purchase limit, since a medical card usually allows more than the adult-use cap in the same store.
Store flower in an airtight jar away from heat and light. Keep edibles out of reach of children and pets.
This guide is general information, not legal advice. State rules shift, so confirm your program's current requirements before you apply or buy.