Cannabis Laws in California: Possession, Home Growing and Seeds
recreational cannabis is legal for adults 21 and older in California. Adult-use legal since 2016 (Prop 64). Adults 21+ may possess up to 28.5g and cultivate 6 plants. Licensed dispensaries statewide. Largest legal cannabis market globally. Rules concerning cannabis seeds in California may differ from rules governing germinated plants, possession and cultivation. Review the official state sources and applicable local requirements before purchasing, possessing, shipping or germinating seeds.
Home-cultivation rules were reviewed against California Department of Cannabis Control on August 16, 2026. Seed-specific rules have not been independently reviewed. This information is general education, not legal advice. Cannabis seed and cultivation rules vary by state and locality and may change. Confirm current state and local requirements before ordering or germinating seeds.
Official California sources
California permits adults 21 and older to grow up to six cannabis plants at home for personal use (Proposition 64, 2016). Rules for cannabis seeds can differ from rules governing germinated plants, possession and cultivation, and local ordinances or rental agreements may add further requirements. Confirm the current requirements for your area before purchasing or germinating seeds.
California Department of Cannabis Control — reviewed August 16, 2026
This information is general education, not legal advice. Cannabis seed and cultivation rules vary by state and locality and may change. Confirm current state and local requirements before ordering or germinating seeds.
California Cannabis Law Summary
Adult-use legal since 2016 (Prop 64). Adults 21+ may possess up to 28.5g and cultivate 6 plants. Licensed dispensaries statewide. Largest legal cannabis market globally.
Legal Status
Recreational & Medical Legal
Cannabis Seeds
Confirm current rules
This page is general information, not legal advice. Cannabis laws change frequently, always verify the current statute with an official California state source before acting.
Are Cannabis Seeds Legal in California?
Rules concerning cannabis seeds in California may differ from rules governing germinated plants, possession and cultivation. Review the official state sources and applicable local requirements before purchasing, possessing, shipping or germinating seeds.
Growing Conditions in California
Year-round in Southern California; March through November in Northern California. The Emerald Triangle (Humboldt, Mendocino, Trinity) is the historic heart of US outdoor cannabis. With a mild coastal climate and roughly 290 frost-free days, California growers tend to do best with sativa-dominant hybrids, OG lineage, exotic genetics. Both indoor and outdoor excel in California. Coastal grows benefit from fog-moderated temperatures; Central Valley offers intense sun and heat for massive outdoor plants.
Buy Cannabis Seeds in California
Royal King Seeds ships feminized, autoflower, and high-THC seeds from within the United States. See our California seed guide for climate-matched picks, or browse the full catalog.
California Cannabis Law FAQ
What is the cannabis legal status in California?+
In California, recreational cannabis is legal for adults 21 and older. Adult-use legal since 2016 (Prop 64). Adults 21+ may possess up to 28.5g and cultivate 6 plants. Licensed dispensaries statewide. Largest legal cannabis market globally.
Are cannabis seeds legal to buy in California?+
Rules concerning cannabis seeds in California may differ from rules governing germinated plants, possession and cultivation. Review the official state sources and applicable local requirements before purchasing, possessing, shipping or germinating seeds.
Can I grow cannabis at home in California?+
California permits limited home cultivation under current law, see the possession and cultivation details above for plant counts. Year-round in Southern California; March through November in Northern California. The Emerald Triangle (Humboldt, Mendocino, Trinity) is the historic heart of US outdoor cannabis.
What cannabis seeds grow best in California?+
California's mild coastal climate and roughly 290-day frost-free season favor sativa-dominant hybrids, OG lineage, exotic genetics. See our California seed guide for climate-matched strain picks.