Kansas marijuana laws classify cannabis as a Schedule I controlled substance, which means recreational use is illegal, there is no operating medical marijuana program, and even a first-offense possession charge can land you in jail for up to six months. Distribution, cultivation, and repeat possession are felonies, and marijuana-impaired driving is prosecuted under the same statute as drunk driving. A narrow affirmative defense exists for certain low-THC CBD preparations used to treat a diagnosed medical condition, but it does not legalize possession.
Possession Penalties
Possessing any amount of marijuana for personal use is a crime, and the charges escalate with each conviction. A first offense is a Class B nonperson misdemeanor, carrying up to six months in jail and a fine up to $1,000. A second offense becomes a Class A nonperson misdemeanor, which raises the exposure to up to a year in jail. A third or subsequent conviction is a drug severity level 5 felony, with a potential state prison sentence and a fine up to $100,000.1Kansas Office of Revisor of Statutes. Kansas Code 21-5706 – Unlawful Possession of Controlled Substances
Prior convictions from other states and from local ordinances count toward that escalation. An old possession charge from somewhere else can push a new Kansas case into felony territory, with the long-term consequences a felony drug conviction brings for employment, housing, and firearm eligibility.1Kansas Office of Revisor of Statutes. Kansas Code 21-5706 – Unlawful Possession of Controlled Substances
Distribution and Cultivation Penalties
Selling or distributing marijuana is a felony no matter the amount. The severity level and sentencing range depend on weight:
- Less than 25 grams: drug severity level 4 felony, up to 51 months in prison and a fine up to $300,000.
- 25 grams to less than 450 grams: drug severity level 3 felony, up to 83 months in prison and a fine up to $300,000.
- 450 grams to less than 30 kilograms: drug severity level 2 felony, up to 144 months in prison and a fine up to $500,000.
- 30 kilograms or more: drug severity level 1 felony, up to 204 months in prison and a fine up to $500,000.
Distribution within 1,000 feet of a school automatically bumps the severity level up by one.2Kansas Office of Revisor of Statutes. Kansas Code 21-5705 – Unlawful Distribution of Controlled Substances
Cultivation uses a parallel structure based on plant count. Growing five to 49 plants is a drug severity level 3 felony, 50 to 99 plants is a level 2 felony, and 100 or more plants is a level 1 felony, with maximum prison terms and fines that match the distribution tiers at the same severity level.3Kansas Legislature. Joint Committee on Corrections and Juvenile Justice Oversight Sentencing Range Drug Offenses
Drug Paraphernalia
Paraphernalia is a separate charge. You can be prosecuted for the pipe, grinder, or rolling papers even if no marijuana is found on you. Possessing paraphernalia for personal drug use is a Class B nonperson misdemeanor. Using paraphernalia to cultivate marijuana is a drug severity level 5 felony, though the charge drops to a Class B misdemeanor if the grow is fewer than five plants.4Kansas Office of Revisor of Statutes. Kansas Code 21-5709 – Unlawful Drug Paraphernalia
Selling paraphernalia is treated far more harshly. It is a drug severity level 3 felony, carrying the same sentencing range as distributing 25 to 450 grams of marijuana. Advertising paraphernalia for sale is a Class A nonperson misdemeanor.4Kansas Office of Revisor of Statutes. Kansas Code 21-5709 – Unlawful Drug Paraphernalia
Driving Under the Influence of Marijuana
Marijuana DUI is prosecuted under K.S.A. 8-1567, the same statute that covers alcohol-impaired driving. Kansas has no per se THC blood level. Instead, a driver commits DUI by operating a vehicle while impaired by any drug to a degree that makes safe driving impossible. Officers build the case through field sobriety testing and Drug Recognition Expert evaluations, and may request blood or urine testing.5Kansas Office of Revisor of Statutes. Kansas Code 8-1567 – Driving Under the Influence
A first-offense marijuana DUI is a Class B nonperson misdemeanor. The sentence includes 48 consecutive hours to six months in jail (or, at the court’s discretion, 100 hours of community service in place of the jail minimum), plus a fine of $750 to $1,000.5Kansas Office of Revisor of Statutes. Kansas Code 8-1567 – Driving Under the Influence Penalties climb with prior offenses. A third DUI within ten years of a prior offense becomes a felony with a 90-day minimum jail sentence.
A first DUI conviction brings a 30-day hard license suspension followed by a restricted driving period requiring an ignition interlock device. A second conviction means a full one-year suspension, a year with an interlock, and a $400 reinstatement fee.6Kansas Highway Patrol. BAC .08-.1499 – All Drivers
Kansas enforces implied consent. By driving in the state, you are deemed to have consented to blood, breath, or urine testing when an officer has reasonable grounds to suspect impairment. Refusing the test triggers an automatic one-year license suspension on the first refusal, and the refusal can be used against you at trial. If you have a prior test refusal or DUI conviction, a new refusal can be charged as a separate crime with penalties equal to or greater than the DUI.7Kansas State Legislature. Kansas Code 8-1001 – Implied Consent
Medical Marijuana and the CBD Affirmative Defense
Kansas does not have a medical marijuana program. There are no dispensaries, no patient registry cards, and no legal pathway to obtain high-THC cannabis for medical use. Bills to create such a program have been introduced but have not passed.
What state law does provide is a narrow affirmative defense for certain low-THC cannabidiol preparations. This defense does not make possession legal. It gives you a way to defeat a conviction after an arrest. To qualify, you must have a debilitating medical condition, defined as a chronic disease or condition that causes serious impairment of strength or ability to function, including one that produces seizures, and a Kansas-licensed physician must be actively treating that condition.1Kansas Office of Revisor of Statutes. Kansas Code 21-5706 – Unlawful Possession of Controlled Substances
The product has to be a cannabidiol oil preparation in which THC concentration is no more than 5% relative to the CBD concentration in that preparation, verified through independent third-party lab testing. That is a ratio, not a flat 5% THC cap.8FindLaw. Kansas Statutes Chapter 65 Public Health 65-6235
You must also carry a letter from the treating physician any time you have the CBD preparation on you. The letter has to be dated within the preceding 15 months, printed on the physician’s letterhead, signed by the physician, and identify you (or your minor child) as the patient together with the diagnosed condition. You are required to produce the letter if an officer asks for it.1Kansas Office of Revisor of Statutes. Kansas Code 21-5706 – Unlawful Possession of Controlled Substances
Hemp and CBD Products
The line between legal hemp and illegal marijuana sits at the federal 0.3% threshold. Industrial hemp is defined as any part of the cannabis sativa L. plant containing no more than 0.3% delta-9 THC on a dry weight basis.9FindLaw. Kansas Statutes Chapter 2 Agriculture 2-3901 Hemp-derived products that stay within that limit are legal to buy, sell, and possess.
Delta-8 THC is in a more uncertain position. A 2021 Kansas Attorney General opinion concluded that delta-8 THC is a Schedule I controlled substance unless the product is derived from industrial hemp and contains no more than 0.3% total tetrahydrocannabinols. Many delta-8 products on the market exceed that total THC limit, which makes them potentially unlawful to sell or possess regardless of how the delta-8 was produced.10Kansas Secretary of State. Kansas Register Volume 41 Issue 9 – Attorney General Opinions 2021-1 Through 2021-4
Even when a hemp product meets the 0.3% threshold, Kansas bans certain product categories outright. Liquids, solids, and gases containing industrial hemp intended for use in vaping devices are unlawful to manufacture, sell, or distribute to anyone. Industrial hemp buds, ground floral material, and ground leaf material can only be sold to licensed hemp processors or growers, not to the general public.11Kansas Office of Revisor of Statutes. Kansas Code 2-3908 – Unlawful Hemp Products; Penalties; Exceptions
Expungement of Marijuana Convictions
A marijuana conviction does not have to sit on your record forever, but Kansas builds in waiting periods, and the clock only starts after you’ve completed your sentence, probation, or parole.
- Misdemeanor possession (first or second offense): petition three or more years after completing your sentence or discharge from probation.
- Drug severity level 5 felony (third-offense possession): the same three-year waiting period.
- Drug severity levels 1 through 4 felonies (distribution or cultivation): at least five years after completing your sentence or supervision.
Clearing the waiting period is not the end of it. At the expungement hearing the court weighs four factors: whether you’ve had any felony convictions in the past two years, whether your behavior warrants expungement, whether granting it serves the public welfare, and, for felony convictions, whether your possession of a firearm would pose a safety risk. The court can deny the petition even if the technical requirements are met.12Kansas Office of Revisor of Statutes. Kansas Code 21-6614 – Expungement of Certain Convictions, Arrest Records, and Diversion Agreements
Filing fees vary by county and often run several hundred dollars. If you completed a diversion agreement instead of being convicted, you can petition for expungement of that agreement and the related arrest records under the same three-year timeline.