Arlington Heights, IL Cannabis Regulations: Home Cultivation (2026)

Under the Illinois Cannabis Regulation and Tax Act (410 ILCS 705), recreational cannabis users are prohibited from growing cannabis plants at home. This is a state-level prohibition that applies uniformly across Illinois, including Arlington Heights. Only individuals registered as qualifying patients under the Compassionate Use of Medical Cannabis Program Act (410 ILCS 130) may cultivate cannabis at home. Qualifying medical patients may grow up to 5 cannabis plants that are 5 inches or taller in an enclosed, locked space at their primary residence. The growing area must not be visible from a public place and must be accessible only to the registered patient. Plants must be tagged with the patient's registry identification card number. Medical patients may possess the cannabis harvested from their home-grown plants in addition to their standard dispensary allotment. Arlington Heights does not impose local restrictions beyond state law on medical home cultivation. Growing cannabis without a valid medical registry card is a criminal offense under Illinois law. Landlords may prohibit cannabis cultivation in rental properties, and HOAs may impose restrictions in their covenants.