What States Can You Grow Marijuana at Home?

You can legally grow marijuana at home in roughly 24 states and Washington, D.C., though the rules differ sharply from state to state. About 19 of those states allow any adult 21 or older to grow a limited number of plants for personal recreational use. The rest restrict home cultivation to registered medical patients. A few states that permit legal marijuana sales still prohibit growing it yourself, and federal law continues to treat all cultivation as illegal no matter what your state allows.

States Where Adults 21+ Can Grow at Home

Each state sets its own plant count, household cap, and security requirements. Find your state below for the specifics.

Washington, D.C. also permits home cultivation. Other states have passed legalization measures with home grow provisions at various stages of implementation, and the laws change often enough that your state’s cannabis agency website is the right place to check before planting.

States That Allow Only Medical Patients to Grow

In a smaller group of states, home cultivation is reserved for people enrolled in the state’s medical cannabis program. That generally requires a qualifying diagnosis, a written authorization from a licensed healthcare provider, and registration with the state. Depending on the state, qualifying providers can include physicians, nurse practitioners, physician assistants, and naturopathic doctors.

  • Arkansas: Seven mature and seven immature plants for registered patients or their designated caregivers.
  • Hawaii: Ten plants total for medical cardholders or their primary caregivers.
  • Illinois: Five plants at least five inches tall for registered medical patients only.
  • Oklahoma: Six mature plants and six seedlings for licensed medical patients.
  • Washington: Patients registered with the state database can grow up to 15 plants depending on their provider’s recommendation. Patients with a valid authorization but no registration can grow up to four.19Washington State Liquor and Cannabis Board. Home Cannabis Cultivation – Research Brief

Security standards for medical grows are at least as strict as recreational ones. Plants must be in a locked, enclosed space inaccessible to minors and out of public view. Diverting medical marijuana to anyone who is not the patient or an authorized caregiver can cost you your card and bring criminal charges.

If You Can’t Grow for Yourself

Most medical cultivation states let a designated caregiver grow on a patient’s behalf. Caregivers typically must be at least 21, registered with the state’s medical program, and limited to a set number of patients. In New York, a caregiver can cultivate for up to four patients but cannot exceed 12 total plants (six mature and six immature) at a single residence, regardless of how many patients they serve. When a caregiver is growing for a patient, the patient usually cannot also grow their own allotment. Caregivers can be reimbursed for supplies, soil, nutrients, and utilities but not for labor or expertise.20New York Office of Cannabis Management. Medical and Adult-Use Home Cultivation of Cannabis Frequently Asked Questions

Legal Marijuana States Where You Still Cannot Grow

Legal sales do not always mean legal cultivation. New Jersey has a functioning adult-use retail market but no home cultivation provision for anyone, including medical patients. Washington and Illinois permit medical patients to grow but bar all recreational home grows.19Washington State Liquor and Cannabis Board. Home Cannabis Cultivation – Research Brief

In states where marijuana remains entirely illegal, such as Idaho, Kansas, and South Carolina, growing even one plant can bring felony charges, substantial fines, and prison time. Penalties typically escalate quickly with the number of plants, and the felony threshold in these states is often very low.

Rules That Apply Almost Everywhere You Grow

A few requirements show up again and again in states that allow home cultivation. The most universal is the locked-space rule: plants must be in an enclosed area with a lock or similar security device that keeps anyone under 21 out. In most states the growing area also cannot be visible from any public place without binoculars or other optical aids.

The per-person versus per-household distinction causes more mistakes than any other rule. Some states cap plants per adult and then put a ceiling on the residence; others set a flat household number. Oregon allows exactly four plants per residence whether one adult lives there or five.16Oregon Liquor and Cannabis Commission. Frequently Asked Questions Massachusetts allows six per person up to a 12-plant household cap.8Mass.gov. Massachusetts Law About Recreational Marijuana Confusing the two is a quick way to end up over your limit.

Making concentrates with flammable solvents is a separate issue. Drying, curing, and processing with non-volatile methods is generally fine, but many states treat solvent extraction as its own offense. Massachusetts, for instance, bars manufacturing concentrates at home using any liquid or gas with a flashpoint below 100 degrees Fahrenheit.8Mass.gov. Massachusetts Law About Recreational Marijuana

Every state that allows cultivation also limits how much harvested marijuana you can keep. Caps vary from a couple of ounces up to ten ounces or more, with some states like Maine allowing medical patients to keep up to eight pounds. And while many states let you give homegrown marijuana to another adult over 21, that transfer must involve no payment or trade of value. Arizona permits transferring up to one ounce or up to six plants to another adult as long as no money changes hands and the transfer is not publicly advertised.2Arizona Legislature. Arizona Revised Statutes 36-2852 – Allowable Possession and Personal Use of Marijuana The moment compensation enters the picture, you have an unlicensed sale, which is a crime even in legal states.

Local and Private Rules Can Still Stop You

State permission is not the last word. Landlords, homeowners associations, and local governments can impose rules that make home cultivation impractical or forbidden where you live.

Landlord and Lease Restrictions

Property owners can prohibit marijuana cultivation in their rentals. Landlords who participate in federal housing programs are generally required to ban it because of federal law, and private landlords with no federal ties can still write no-cultivation clauses into leases. Growing anyway puts you at risk of eviction regardless of what state law allows.

HOA and Condo Association Rules

Homeowners associations and condo boards can ban cultivation through their covenants, often citing federal illegality or nuisance provisions. Flowering plants produce a strong odor that can travel beyond property lines, and many local ordinances require home growers to contain smells within their own residence. A grow room that reaches neighboring units invites complaints and association fines.

Local Zoning Ordinances

Cities and counties can add their own restrictions on top of state law, from outright bans within city limits to buffer zones near schools or parks to additional permitting steps. Colorado allows six plants per person at the state level, but Denver sets its own 12-plant household cap.4Cannabis in Colorado. Home Grow Laws Check your city and county rules alongside the state law.

Federal Law Still Treats It as a Crime

Federal law classifies marijuana as a Schedule I controlled substance.21Office of the Law Revision Counsel. 21 USC 812 – Schedules of Controlled Substances That has not changed with state legalization. Even a grow that follows every state requirement is technically a federal violation. Federal authorities have largely declined to prosecute individual home growers who comply with state law, but the prohibition still creates real consequences:

  • Federal employees must remain drug-free regardless of state law. Using or growing marijuana off-duty in a legal state can result in disciplinary action up to termination. The same applies to federal contractors and holders of security clearances.22U.S. Department of Agriculture U.S. Forest Service. Federal Employees and Marijuana Use – What You Need to Know
  • Federal law prohibits any unlawful user of a controlled substance from buying or possessing a firearm. State-legal marijuana users fall under that prohibition, and lying about marijuana use on ATF Form 4473 is a separate felony.23Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
  • Residents of federally subsidized housing can be denied admission or evicted for using or growing marijuana, even in states where it is legal.
  • Federal authorities can bring civil asset forfeiture against property connected to cultivation. The government need only show a connection by a preponderance of the evidence; the burden then shifts to you to prove you are an innocent owner.

Insurance Can Deny Your Claim

Many homeowners policies now carry explicit marijuana exclusions. One widely used endorsement states that coverage does not extend to “any loss related to, resulting from, or arising out of the growing, harvesting, processing, distribution, or sale of any marijuana plants” and excludes equipment and materials used for cultivation regardless of what caused the damage.24Nevada Division of Insurance. Marijuana Growing and Processing Exclusion If a grow light sparks a fire or a water line to your grow room bursts, the entire claim can be denied, not just the portion involving plants or equipment. Review your policy for cannabis-related exclusions before you plant, and ask your agent about specialty cannabis endorsements if your insurer offers them.