In Ohio, you can grow up to six cannabis plants per adult aged 21 or older at your primary residence, with a hard ceiling of twelve plants per household no matter how many adults live there. Three roommates who each want their own six are still capped at twelve between them. The rule comes from Ohio Revised Code Section 3780.29, enacted through the voter-approved Issue 2 in 2023.1Ohio Legislative Service Commission. Ohio Revised Code 3780.29 – Home Grow
Every plant counts. Ohio does not separate seedlings from mature, flowering plants the way some other states do, so a tray of clones on day one counts the same as a six-foot plant in flower.
Who Qualifies to Grow at Home
Home cultivation is an adult-use right, not a medical one. If you are 21 or older, you qualify. Medical marijuana patients registered under Chapter 3796 of the Revised Code cannot grow their own plants; all medical cannabis has to come from a state-licensed dispensary.2Ohio Department of Commerce. How to Obtain Medical Marijuana Holding a medical card doesn’t change that, and it doesn’t hurt you either: if you’re 21, you’re eligible to grow under the adult-use rules regardless of your medical status.
Where the Plants Have to Live
A backyard row of cannabis alongside your tomatoes isn’t allowed. Cultivation has to happen inside a secured closet, room, greenhouse, or other enclosed area on the grounds of your residence, and that space has to do two things at once: keep anyone under 21 out, and keep the plants out of sight from any public area without binoculars or similar devices.1Ohio Legislative Service Commission. Ohio Revised Code 3780.29 – Home Grow
A few more conditions apply to how you grow and what you can do with the harvest:
- Grow only at your primary residence, not a vacation home, storage unit, or second address.
- No hydrocarbon-based extraction (butane hash oil and similar processes are prohibited). Hand or mechanical processing is allowed.
- No sales. Profiting from homegrown cannabis is illegal even between adults.
How Much You Can Keep From the Harvest
Growing legal plants doesn’t automatically make the finished product legal to keep in any amount. An adult-use consumer may possess up to two and a half ounces of cannabis in plant form and up to fifteen grams of cannabis extract.3Ohio Legislative Service Commission. Ohio Revised Code 3780.36 – Personal Use A productive harvest from six plants can easily exceed that. Anything over the possession cap puts you outside the law even if the plants themselves were within the six-plant limit.
What Happens if You Grow Too Many
Minor violations of the home grow rules, such as an enclosure that isn’t properly secured, are handled as civil penalties by the Division of Cannabis Control under a schedule set through rulemaking.1Ohio Legislative Service Commission. Ohio Revised Code 3780.29 – Home Grow
The picture changes sharply once you double the limit. A single adult cultivating twelve or more plants, or a household growing twenty-four or more, faces criminal charges for illegal trafficking and illegal manufacture of drugs under Sections 2925.03 and 2925.04.4Ohio Legislative Service Commission. Ohio Revised Code 3780.99 – Penalties Those are felonies that carry potential prison time. Adding two plants to an already-illegal eleven can move the case from a civil fine to a felony prosecution.
Going over the harvested-cannabis possession limit is prosecuted under Section 2925.11, and the severity scales with weight, starting at a minor misdemeanor for small overages and climbing into felony territory at 200 grams and above.5Ohio Legislative Service Commission. Ohio Revised Code 2925.11 – Possession of Controlled Substances
Your Landlord and Your Housing Can Override the Rule
State law lets you grow, but your lease can take that right away. Section 3780.29 explicitly permits landlords to prohibit cultivation in a lease agreement.1Ohio Legislative Service Commission. Ohio Revised Code 3780.29 – Home Grow If your lease says no growing, growing is a lease violation regardless of what Ohio law allows.
Federally subsidized housing is stricter still. Cannabis remains a Schedule I controlled substance under federal law, and HUD prohibits marijuana use and cultivation in all HUD-assisted housing, including Section 8 and public housing, even in states where it is legal. A violation can lead to eviction or loss of housing assistance.6HUD Exchange. Can a Public Housing Agency (PHA) Make a Reasonable Accommodation for Medical Marijuana?
Can Your City Ban Home Growing?
No. Many Ohio municipalities and townships have adopted moratoriums on commercial cannabis businesses, but local governments cannot ban or restrict home cultivation. Ohio’s cannabis law prevents localities from prohibiting activities authorized under Chapter 3780, and home growing is one of them. Even in a town with no dispensary in sight, your six plants are still legal.
Rules Moving in 2026
Several parts of Chapter 3780, including Section 3780.29, are marked on the official Ohio Revised Code site as repealed effective March 20, 2026, through Senate Bill 56. This kind of change usually signals a recodification rather than an elimination of rights established by a voter initiative. The core framework, six plants per person, twelve per household, an enclosed growing area, and no sales, has been in place since December 2023, but the code section numbers housing those rules may change.
If you’re starting a grow in 2026 or later, confirm the current statute at codes.ohio.gov or with the Ohio Division of Cannabis Control before you plant.