What Is the Legal Age to Buy Cannabis in the US
21 for recreational. 18 for medical in many states. Bring a government photo ID that is not expired. The age check happens at the door, at the register, and again at delivery.
Federal Law Sets No Purchase Age
Cannabis is Schedule I under the Controlled Substances Act. There is no legal federal retail purchase, so there is no federal purchase age. Every age rule comes from state law, or from tribal law on tribal land.
Cannabis Legal Age 2025: What Actually Changed
Recreational States: 21
24 states and the District of Columbia run adult-use retail sales. Each one sets the minimum purchase age at 21. No state sells adult-use cannabis to an 18-year-old. Staff scan or read the ID. Expired IDs get refused.
Medical States: 18 With a Card
Medical programs set their own ages. California, Colorado, and Florida issue patient cards at 18. Under 18, a parent or legal guardian registers as caregiver in most programs. A few states allow minors as patients with a physician certification plus a caregiver. An 18-year-old with no patient card cannot buy medical cannabis.
cannabis legal age for recreational
Parameters That Decide the Sale
- State of purchase. The rule that applies is where the store sits, not where you live.
- Transaction limit. California caps retail at 28.5 g flower and 8 g concentrate per day. Colorado caps most retail transactions at 1 oz flower.
- Delivery. The driver checks ID at the door. No ID, no handoff.
- Hemp-derived THC. The 2018 Farm Bill lets hemp products move across state lines. Some states sell them to 18-year-olds, or set no age floor. Check the state before you assume 21.
Pitfalls
- Carrying across state lines. Federal transport offense, even between two legal states.
- Gifting. Handing cannabis over as a workaround for a sale is illegal in most states.
- Fake ID. Misdemeanor or felony charge, plus a store ban.
- Expired ID. Refused at the register. No exceptions for regulars.
- Tribal dispensaries. They follow tribal rules plus compact terms. Age can differ from the state next door.
Convenience does not change the age. Online ordering, curbside pickup, and delivery all end with an ID check at 21 or 18, depending on the license behind the sale.