Short answer

Cannabis is a Schedule I drug under the federal Controlled Substances Act. No federal permit exists for selling it. The rules for buying weed from an online dispensary come from state law, not federal law. An order is legal only when three items line up: the seller holds a license from your state, your state allows online sales or delivery, and you meet the age and residency rules for that state. Remove any one item and the order breaks state law.

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Check five items before you pay

  1. License number. Legal shops publish a state license number on the site. Look it up in your state cannabis registry. A missing number is a stop sign.
  2. Coverage area. A shop licensed in California cannot ship to Texas. State borders block cannabis commerce under federal law. A site that promises delivery to all 50 states operates outside the licensed system.
  3. Age. Recreational sales need buyers at 21 or older. Medical sales need a state card, and most states set the floor at 18. Expect an ID scan at the door or at the delivery handoff.
  4. Payment. Card networks block cannabis charges. Visa and Mastercard rules plus federal banking limits push most legal shops to cash, PIN debit through a partner bank, or a state-approved app. A seller who takes only Cash App, Zelle, or crypto carries no consumer protection.
  5. Lab test. Legal flower and edibles carry a batch test from a state-certified lab. The label lists THC percentage, pesticides, mold, and heavy metals.

Where the rules change

State law

As of 2024, 24 states and the District of Columbia allow recreational sales. About 40 states run a medical program. Each state writes its own license classes, possession caps, and delivery zones. A legal order in Illinois is a crime in Indiana, 20 miles away.

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Hemp and delta-8

The 2018 Farm Bill made hemp legal at the federal level when delta-9 THC stays at or under 0.3% on a dry weight basis. Delta-8 gummies fall in that gap. Several states ban delta-8 outright. Federal legality does not override a state ban.

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Delivery vs shipping

In-state delivery from a licensed shop is legal in states such as California, Nevada, and New York. Shipping across state lines is not. The USPS treats cannabis as non-mailable under Publication 52. FedEx and UPS ban it in their service terms.

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Pitfalls

  • No license number, no street address, no phone contact.
  • Payment limited to peer-to-peer apps or crypto.
  • No batch test or COA on request.
  • No age check at checkout.
  • Prices well under local retail. State cannabis taxes run from 10% to 37%, so a legal shop cannot match a black market price.
  • Health claims about cancer, anxiety, or chronic pain. The FDA has approved no cannabis product for those uses.

If an order goes wrong

State regulators run license lookups and recall lists. A licensed purchase gives you a receipt with a batch number, a tested product, and a path to a complaint. An unlicensed seller gives you none of those. Call your state cannabis board first, then your state attorney general consumer line.