California adult-use basics
California's Department of Cannabis Control (DCC) says adult-use purchase is for people 21 or older. It describes medicinal access separately, including a physician-recommendation route for adults 18 and older. This is not a claim that every cannabis product or sale is authorized. Start with the DCC consumer rules.

Where state guidance allows use
DCC says cannabis may be used on private property, not in public places such as restaurants or bars. Smoking is restricted where tobacco smoking is prohibited and within 1,000 feet of a school, day-care, or youth center while children are present. A property owner may prohibit use; renters should check their agreement.
Local and federal boundaries
Cities and counties may impose stricter rules, including home-grow conditions. DCC warns that California permission does not extend to federal land or transport across state lines. Federal law also distinguishes medical products: an April 2026 Justice Department order moved FDA-approved marijuana products and products under a qualifying state medical license to Schedule III, while broader rescheduling remains under review. That narrow medical action is not federal authorization for general adult-use cannabis. See U.S. cannabis law basics.
Quick FAQ
What age does California set for adult-use cannabis?
The Department of Cannabis Control says adults must be 21 or older; medical use has a separate physician-recommendation pathway for people 18 or older.
Can I use cannabis in public?
The state page says private property may allow use, but public places such as restaurants and bars are not allowed; owners may prohibit use, and local rules can be stricter.
Can California rules be assumed to apply in every city or across state lines?
No. Cities and counties may be stricter, federal restrictions remain relevant, and the state warns against taking cannabis across state lines.
Sources
- California DCC: What's legal -- directly read 2026-09-25.
- California DCC: Regulations -- official regulations index checked 2026-09-25.
- U.S. DOJ: April 2026 medical-product scheduling order -- directly read 2026-09-25.
Sources checked 2026-09-25.