States Where Home Weed Growing Is Legal 2025
Discover the states where home weed growing is legal in 2025, and everything you need to know to start growing at home.
California lets adults 21 and older grow up to six cannabis plants at a private residence for personal use, and it requires a state license plus local approval to grow cannabis for sale. Proposition 64 set those limits in 2016. Cities and counties fill in the rest, so the rules that govern a grow often depend on the street address.
cannabis cultivation laws in california
Plants are not the whole picture. Adults 21 and up may possess 28.5 grams of cannabis flower and 8 grams of concentrate. A home grow must sit in a locked space that the public cannot see, and selling any part of the harvest without a license is a crime.
do you need a license to grow cannabis at home
What are California's personal cultivation rules?
Personal cultivation is a right for California adults, but a narrow one. The six-plant cap applies per residence, not per person, so a house with four adults still gets six plants. Plants must stay in a locked area or an enclosed structure and out of public view.
cannabis cultivation laws in california
- Age: 21 and older. Patients with a doctor's recommendation follow a different set of rules.
- Plant count: six per residence, whether the grow is indoor, outdoor, or split between the two.
- Location: inside a private residence or in a locked accessory structure such as a shed or greenhouse.
- Visibility: no view of the plants from a public place, a sidewalk, or a neighbor's yard.
- Sale: none. Giving a small amount to another adult 21 and up is allowed; selling, trading for value, or shipping is not.
- Schools: cultivating within 600 feet of a school, daycare, youth center, or playground while children are present carries a penalty.
How do city and county rules change a home grow?
Local governments hold most of the power over cultivation. A city or county may ban outdoor growing, set plant caps below six, require a permit, and impose fencing, setback, and odor rules. Zoning matters as much as plant counts, since a legal grow on one parcel can be a violation two blocks away.
Two limits on local power are worth knowing. Prop 64 gives cities and counties room to ban outdoor personal cultivation, while a ban on growing inside your own home is contested in court. Local rules also cannot legalize what the state prohibits, such as selling untaxed cannabis.
Read the municipal code before you buy a light or a greenhouse. Code enforcement fines for an unpermitted grow can run into the thousands of dollars, and some cities bill daily until the plants come down.
What does it take to grow cannabis for sale in California?
Commercial cultivation needs two approvals: a license from the California Department of Cannabis Control and a permit or authorization from the city or county. The state will not license a grow that local government has not approved. Expect background checks, site inspections, a premises diagram, and fees scaled to canopy size.
Cultivation license types
- Outdoor licenses for sun-grown canopy, sized from specialty cottage plots up to large farms.
- Indoor licenses for warehouse and building grows under artificial light.
- Mixed-light licenses for greenhouse and light-deprivation operations.
- Nursery licenses for clones, seeds, and immature plants.
- Microbusiness licenses that combine cultivation with manufacturing, distribution, or retail on a small footprint.
Compliance after licensing
A licensed grow runs on records. Every plant gets tagged in the state track-and-trace system, and harvests are weighed, tested by a licensed lab, and packaged with labels that match the batch. Pesticide use, employee training, and waste disposal all fall under state rules.
Taxes shifted in 2022. California dropped the separate cultivation tax and now collects excise tax at retail, so growers still owe income tax and payroll taxes.
Which environmental rules apply to a cannabis grow?
Water and soil rules catch many new growers by surprise. The State Water Resources Control Board runs a general order for cannabis cultivation that covers water diversion, storage, erosion control, and sediment discharge. Enrollment is required for most outdoor grows that touch a stream, spring, or hillside.
- No sediment or waste may reach a river, creek, or storm drain.
- Diversion and storage limits apply, and some diversions are banned during low-flow periods.
- Work near a stream may need a Lake and Streambed Alteration Agreement from the California Department of Fish and Wildlife.
- Grading, wells, and roads often need county permits, and large projects may trigger CEQA review.
What are the rules for medical cannabis patients?
Patients with a physician's recommendation can grow more than six plants when the amount matches their medical need. Proposition 215 and SB 420 created that path, and a caregiver may cultivate on a patient's behalf. Local limits still apply, and the plants must stay in a locked space.
Commercial growers cannot use medical rules as a workaround. A recommendation covers personal medicine, not sales to dispensaries. Storefronts and delivery services need licenses at every step of the chain.
What happens if you grow outside the law?
Penalties depend on scale and harm. A personal grow that breaks local rules often ends with a citation, a fine, and an order to remove the plants. Unlicensed commercial cultivation can be charged as a misdemeanor or a felony, with extra charges for water diversion, banned pesticides, or damage to public land.
Civil penalties add up too. State and local agencies can levy fines per plant or per day, seize equipment, and pursue cleanup costs for environmental damage.
Frequently asked questions
How many cannabis plants can one household grow in California?
Six plants per residence, no matter how many adults live there. A landlord or a city may set stricter limits, and outdoor grows can be banned at the local level.
Can my landlord ban cannabis cultivation?
Yes. A lease can prohibit growing, and many do. Rental agreements can also ban smoking and set odor rules, so read the lease before you plant.
Can I sell extra cannabis from my home grow?
No. Sales require a state license and local approval. Giving a small amount to another adult is legal, but selling, trading, or shipping cannabis without a license is not.
Do I need a permit to grow outdoors?
Often yes. Many counties require a permit, a site plan, and proof of water rights for outdoor cultivation, and some ban it outright. Ask the planning department before you break ground.
Can someone under 21 grow cannabis in California?
Adult-use cultivation starts at 21. Medical patients 18 and up with a physician's recommendation follow medical rules instead, and minors need a parent or guardian acting as caregiver.