There is no uniform national limit for cannabis home grows. Most states that allow home cultivation set a limit of 6 plants per adult, with a household cap of 12 plants. Some states allow fewer, some allow more, and some prohibit home grow entirely. Your exact limit depends on your state, whether you grow for medical or recreational use, and local rules.
Why limits vary by state
Cannabis laws are state-specific. Each state sets its own plant count, possession limit, and rules for where you can grow. Medical programs often have separate limits from recreational programs. Some states allow caregivers to grow on behalf of patients, which can increase the total plant count. Others cap the number of plants per household regardless of how many adults live there.
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Common home grow limits by state
These examples show the range of rules. Always confirm current limits with your state's cannabis authority, because laws change.
home grow cannabis laws state by state
- Alaska: 6 plants per person, 12 per household (recreational).
- California: 6 plants per residence (recreational). Medical patients may grow more with a doctor's recommendation.
- Colorado: 6 plants per adult, 12 per household (recreational). Medical patients can grow 6 plants per patient, with a maximum of 12 per household unless they have an extended plant count.
- Massachusetts: 6 plants per adult, 12 per household (recreational).
- Nevada: 6 plants per adult, 12 per household (recreational).
- Oregon: 4 plants per household (recreational).
- Washington: No recreational home grow. Medical patients may grow up to 6 plants.
These examples are not exhaustive. States like Maine, Michigan, and Vermont also allow home grow with their own limits. Some states, such as Florida and Pennsylvania, allow medical cannabis but not home cultivation.
Household caps vs. per-person limits
A per-person limit means each adult 21 and older can grow the allowed number of plants. A household cap limits the total number of plants in a residence, no matter how many adults live there. For example, if a state allows 6 per adult with a 12-plant household cap, two adults can grow 12 plants, but four adults still cannot exceed 12 plants. Always check which rule applies in your state.
Possession limits tied to home grow
Home grow limits often come with a possession limit for harvested cannabis. For instance, a state might allow you to keep a certain number of ounces of dried flower from your plants. Exceeding that amount can lead to penalties, even if you grew the plants legally. Check your state's possession rules for home-grown cannabis.
Local rules can be stricter
Counties and cities may ban outdoor grows, require locked enclosures, or limit the number of plants further. A state license does not override local zoning or nuisance ordinances. Before you plant, check with your city or county planning department.
How to verify your state's home grow limits
- Find your state's cannabis regulatory agency website. Search for cannabis home cultivation or personal grow limits.
- Read the section for recreational or medical patients, depending on your situation.
- Note the plant count per person and any household cap.
- Check the possession limit for harvested cannabis.
- Contact your city or county to ask about local restrictions on home grow.
- If you are a medical patient, confirm whether caregiver grows are allowed and how they affect your limit.
Laws change. A limit that was correct last year may be different today. Always rely on your state's current official rules before you grow.