Psilocybin is not legal in Illinois. The state classifies psilocybin and psilocin as Schedule I controlled substances, the same tier as heroin and LSD, and federal law does the same.1Illinois General Assembly. Illinois Code 720 ILCS 570/204 – Schedule I2Office of the Law Revision Counsel. 21 USC 812 – Schedules of Controlled Substances Possessing, growing, selling, or delivering psilocybin mushrooms is a felony under state law, with no medical exception and no prescription pathway. Even if Illinois changed course, federal authorities retain independent power to prosecute.
Penalties for Possessing Psilocybin
Psilocybin isn’t named individually in the penalty sections of the Illinois Controlled Substances Act. It falls under the catch-all provisions for Schedule I substances, which produce a two-tier structure based on weight.
Any amount below the enhanced-sentencing threshold is a Class 4 felony, punishable by one to three years in prison and a fine of up to $25,000.3Illinois General Assembly. Illinois Code 720 ILCS 570/402 – Possession of Controlled Substances Possession of 200 grams or more is a Class 1 felony, carrying four to 15 years. The 200-gram figure is the total weight of the substance, not the pure psilocybin content, so a bag of dried mushrooms reaches that mark faster than most people expect.
Penalties for Growing, Selling, or Delivering
Manufacturing, delivering, or possessing psilocybin with intent to deliver draws heavier punishment. The tiers under 720 ILCS 570/401 are:4Illinois General Assembly. Illinois Code 720 ILCS 570/401 – Manufacture or Delivery of Controlled Substances
- Less than 50 grams: a lower-class felony carrying two to five years.
- 50 to 199 grams: a Class 1 felony, four to 15 years.
- 200 grams or more: a Class X felony with a mandatory 6 to 30 years in prison. Probation is not available.
Cultivation counts as manufacturing under this statute. It doesn’t matter whether the mushrooms were meant for personal use or for sale, and the weight of the harvested mushrooms — not the number of grow containers — determines the tier.
What a Felony Conviction Costs Beyond Prison
The collateral consequences of an Illinois drug felony often outlast the sentence itself. A felony record bars you from obtaining or keeping a Firearm Owner’s Identification (FOID) card, which Illinois requires for legal possession of any firearm or ammunition. Professional licensing boards in fields like nursing, teaching, and law can deny or revoke licensure based on a drug felony. Public housing authorities apply federal rules that can restrict access to subsidized housing for people with drug distribution or manufacturing convictions, sometimes permanently.
Because psilocybin is also federally illegal, a conviction can disqualify you from federal employment or contracting. Federal contractors must maintain a drug-free workplace and report any employee drug conviction within ten days.5Office of the Law Revision Counsel. 41 USC 8102 – Drug-Free Workplace Requirements for Federal Contractors Federal student aid rules have loosened in recent years, but certain drug convictions can still create barriers to grants and loans.
What About Psilocybin Spores?
Spores sit in an unusual position. Psilocybin mushroom spores don’t contain psilocybin or psilocin. Because the Illinois Controlled Substances Act schedules the chemical compounds themselves, spores that lack those compounds aren’t a controlled substance under the plain language of the statute.1Illinois General Assembly. Illinois Code 720 ILCS 570/204 – Schedule I Illinois has no separate law banning spore possession, unlike some other states.
The practical risk is another matter. Germinating spores into mycelium that eventually produces psilocybin-containing mushrooms is manufacturing a controlled substance. Spores found alongside substrate, grow bags, or any other cultivation evidence can support a manufacturing charge. Buying spores “for microscopy” offers no protection once cultivation begins.
Do Chicago’s Local Rules Change Anything?
No. In 2019, the Chicago City Council unanimously passed a resolution asking that investigations and arrests involving entheogenic plants — a category that includes psilocybin mushrooms — be treated as “amongst the lowest priority” for the city and the Chicago Police Department.6Chicago City Clerk. Resolution R2019-735 It’s a non-binding resolution, not an ordinance. Psilocybin remains illegal in Chicago, and state or federal authorities can still prosecute.
Evanston considered an official stance against prosecuting residents for psilocybin possession in 2023, but the city council voted it down. No Illinois municipality has adopted a binding decriminalization ordinance.
Legislation That Could Change This
Two bills in the 104th General Assembly (2025–2026) would alter psilocybin’s legal status. Neither has advanced past committee assignment.
House Bill 1143, the Compassionate Use and Research of Entheogens (CURE) Act, would remove psilocybin and psilocin from Schedule I, create a state-licensed framework for psilocybin-assisted therapy, establish a Psilocybin Advisory Board, and impose a 15% tax on psilocybin purchases beginning in 2027. Participants would have to be at least 21, and service centers, facilitators, and product manufacturers would need licenses. As of March 2026, the bill sits in the House Executive Committee with no vote scheduled.7Illinois General Assembly. Bill Status of HB1143
Senate Bill 2184 is narrower. It would remove psilocybin and psilocin from Schedule I without creating a regulated therapeutic program or tax structure. As of January 2026, it sits in the Senate Executive Committee.8LegiScan. IL SB2184 2025-2026 104th General Assembly Bills parked in Executive Committee often die there without a hearing, so assignment alone doesn’t signal momentum.
Until one of these bills passes, the statewide prohibition remains fully in effect. Possessing, growing, selling, or using psilocybin in Illinois is a felony under current law.