Is Cannabis Legal in [State]? Start With the Product
There is no single answer, because "cannabis" covers more than one product type and the United States runs two rulebooks at once. Hemp-derived CBD that contains 0.3 percent or less delta-9 THC by dry weight is legal under federal law. Medical cannabis and adult-use marijuana are legal only in states that passed their own laws, and each of those states sets its own possession limits, purchase rules, and THC caps.
So the real answer is: it depends on where you are, what you are buying, and how much THC the product contains. Sort your question into one of the three categories below, then check your state.
Three Categories, Three Different Answers
- Hemp-derived CBD (0.3 percent THC or less): legal federally, legal in most states, with state differences in labeling, age minimums, and retail licensing.
- Medical cannabis: allowed in roughly 40 states, usually with a doctor's recommendation or a state-issued card.
- Adult-use marijuana: allowed in about two dozen states plus the District of Columbia, generally for adults 21 and older.
Federal Law and State Law Do Not Match
Marijuana and THC stay on Schedule I of the federal Controlled Substances Act. The 2018 Farm Bill carved hemp out of that definition, which is why CBD made from hemp can be sold and shipped across state lines. That same bill did not legalize marijuana, even in states that allow it.
The gap matters in practice. Federal law still applies on federal property, including national parks, federal buildings, and land administered by federal agencies. A state license does not change what happens on that ground.
How to Check Your State's Rules
- Name the product. Write down whether you are asking about hemp CBD, medical cannabis, or adult-use flower and edibles.
- Find the state agency that regulates it. Search for your state's department of health, department of agriculture, or cannabis control board, since the agency name varies.
- Confirm the legal status. The regulator's site will state whether the product is legal, medical only, or prohibited.
- Read the possession limit. Limits are written in ounces, grams, or milligrams of THC, not in product units.
- Check the purchase rule. Some states allow only state-licensed dispensaries, some allow delivery, and some allow neither.
- Look at home cultivation. A handful of states permit it, with plant counts and security requirements.
- Check reciprocity. Most medical states do not accept an out-of-state card, so verify before you travel.
- Check city and county rules. Local governments can ban retail sales or add zoning limits even when the state allows them.
- Check THC caps on edibles. Per-package and per-serving limits differ by state and change often.
What This Means for Online CBD Buyers
Hemp CBD is the category that travels. If you order online, the seller should ship a product made from hemp with a delta-9 THC content at or below 0.3 percent, and should publish a certificate of analysis from an independent lab for each batch. That document shows the cannabinoid profile, so you can confirm the THC number instead of trusting a label.
State rules can still touch your order in smaller ways: age minimums at checkout, restrictions on certain product forms, and labeling requirements. A few states have moved to restrict specific hemp-derived intoxicating cannabinoids, which is separate from ordinary CBD.
Common Mistakes
Driving a legal product across a state line into a state where it is not legal is the most common error. Buying on federal land is another. Assuming that a medical card from home works in another state is a third. Rules also change between legislative sessions, so a page you read two years ago may be out of date.
Verify with the state regulator, confirm the THC content against a lab report, and treat hemp CBD and marijuana as two separate questions.