Illinois CRTA permits home cultivation only by registered medical cannabis patients, who may grow up to five plants over five inches tall in a secured space; recreational adult home cultivation by non-patients is expressly prohibited statewide.
Under 410 ILCS 705/10-5, only Illinois registered qualifying medical patients aged 21 or older may cultivate cannabis at home, with a hard cap of five mature plants over five inches tall per household, regardless of how many patients live there. Plants must be grown in an enclosed, locked space not visible to the public, in the patient's primary residence, and out of reach of minors. Recreational adult home grow is banned by the state, and Chicago has not opted out or added local exceptions. Landlords may prohibit cannabis cultivation in lease terms even when state law allows it.
Non-patient cultivation is a civil violation up to $200 for five or fewer plants, escalating to misdemeanor or felony charges for larger grows, plus possible loss of patient registration and forfeiture of plants under Illinois State Police enforcement.
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