Are Psilocybin Mushrooms Legal in Illinois? (2026)

No. Psilocybin mushrooms are illegal statewide in Illinois in 2026; Chicago has not passed psilocybin decriminalization.

No. Psilocybin is Schedule I under the Illinois Controlled Substances Act (720 ILCS 570/204). No state or city decriminalization has passed. The CURE Act and HB 4782 are pending bills.

No. Psilocybin is a Schedule I controlled substance under the Illinois Controlled Substances Act (720 ILCS 570/204). Psilocybin is also Schedule I under the federal Controlled Substances Act, so no city or state-level change would remove federal exposure. No state-level decriminalization or therapeutic access program has passed. No Illinois city — including Chicago — has passed a deprioritization resolution for psilocybin. See the /tools/psychedelic-legalization-tracker for the full current state-by-state picture.

No. Illinois law does not distinguish by dose or intent. Psilocybin is Schedule I under the Illinois Controlled Substances Act (720 ILCS 570/204) regardless of amount. Under 720 ILCS 570/402, possession of any amount up to 15 grams, a typical microdose range, is still a Class 4 felony carrying one to three years in prison and up to a $25,000 fine. There is no medical, therapeutic, or personal-use carve-out for microdosing under current Illinois law.

No. Chicago has not passed any city resolution on psilocybin mushrooms. Illinois state law classifies psilocybin as Schedule I, and that applies throughout Chicago.

The CURE Act (Compassionate Use and Research of Entheogens) — filed as SB 3695 and related companion bills — would create a licensed therapeutic access framework for psilocybin and related psychedelics in Illinois. It is modeled on Oregon's Measure 109. As of 2026 it has not passed.

Possession of psilocybin in Illinois is a felony. Under 720 ILCS 570/402, possession of less than 15 grams of a Schedule I substance is a Class 4 felony, carrying one to three years in prison and a fine of up to $25,000. Possessing 15 to 100 grams is a Class 1 felony, with four to fifteen years in prison. Manufacture or delivery under 720 ILCS 570/401 carries more serious penalties. No diversion or decriminalization pathway applies to psilocybin possession in Illinois.

Yes. Amanita muscaria is not a controlled substance under the Illinois Controlled Substances Act (720 ILCS 570/) or federal law. Its active compound, muscimol, is not scheduled in Illinois. Amanita muscaria products are sold legally in Illinois. They are pharmacologically distinct from psilocybin mushrooms — muscimol acts on GABA receptors, not serotonin 2A receptors — and do not produce the same effects.

Yes. Psilocybin mushroom spores contain no psilocybin, so they are not a Schedule I substance under the Illinois Controlled Substances Act (720 ILCS 570/) or federal law, and spores are sold legally in Illinois. Germinating spores into mycelium or fruiting bodies is manufacturing a Schedule I controlled substance — a felony under 720 ILCS 570/401. Possession of spores with clear intent to cultivate can still be prosecuted even though the spores themselves are not scheduled.

No, Illinois' recreational cannabis law does not cover psilocybin. The Cannabis Regulation and Tax Act legalized cannabis for adults 21 and older effective January 1, 2020, but that law applies only to cannabis. Psilocybin mushrooms remain a Schedule I controlled substance under Illinois law, entirely separate from and unaffected by the cannabis law.