1. What the law is
Six Michigan cities and counties have deprioritized enforcement, beginning with Ann Arbor in 2020. Detroit and Washtenaw County followed in 2021, Hazel Park in 2022, Ferndale in 2023 and Ypsilanti in 2024. State law still puts psilocybin in Schedule 1.
Psilocybin is decriminalized at the city level in Michigan, with measures adopted in Ann Arbor (2020), Washtenaw County (2021), Detroit (2021), Hazel Park (2022), Ferndale (2023), and Ypsilanti (2024). Decriminalization in this context means deprioritization, not legality. The city resolutions direct local police to treat investigations and arrests of adults for entheogenic plants and fungi, including psilocybin mushrooms, as the lowest law enforcement priority. Detroit adopted the same instruction by ballot measure (Proposal E), and in Washtenaw County the prosecuting attorney has adopted a policy of declining to charge personal use, growth, and possession cases. None of these actions changes the underlying law. Psilocybin remains a Schedule 1 controlled substance under Michigan state law (MCL 333.7404), and it remains illegal under federal law. State and federal authorities retain full power to enforce those laws anywhere in Michigan, including inside the listed cities. In practice, local deprioritization lowers the chance that municipal police will pursue a case; it does not create a right to possess, cultivate, or distribute psilocybin, and it offers no protection elsewhere in the state.
Michigan's six local measures form one of the largest clusters of municipal psilocybin deprioritization in the United States, accumulated steadily between 2020 and 2024. Statewide change has not followed. HB 4686 (2025), which would exempt adults with a PTSD diagnosis from state psilocybin and psilocin penalties, has sat in the House Committee on Families and Veterans since June 2025 without further action. Decriminalize Nature Michigan continues to pursue a statewide decriminalization ballot initiative. Until either path advances, the near-term pattern is likely continued city-by-city adoption while psilocybin remains Schedule 1 under state law.
2. Trials in Michigan
Interventional psilocybin trials with at least one site in Michigan, as their sponsors filed them with ClinicalTrials.gov, EU CTIS and ISRCTN. Each row links to the registry record, which sets out who may take part.
Recruiting or opening counts trials recruiting now, not yet recruiting, or enrolling by invitation. Closed counts trials terminated, suspended, withdrawn or left unverified by their sponsors.
| Registry ID | Trial | Phase | Sponsor | Status | Start date |
|---|---|---|---|---|---|
| NCT05128162 | Open-label Study to Assess the Safety and Efficacy of Psilocybin With Psychotherapy in Adult Participants With Fibromyalgia (opens in new tab)Site at Chronic Pain and Fatigue Research Center, Ann Arbor | Phase Phase 2 | Sponsor Kevin Boehnke | Status Completed | Start date |
| NCT05711940 | Efficacy, Safety, and Tolerability of Two Administrations of COMP360 in Participants With TRD (opens in new tab)Two sites in Ann Arbor | Phase Phase 3 | Sponsor COMPASS Pathways | Status Active, not recruiting | Start date |
ClinicalTrials.gov data courtesy of the U.S. National Library of Medicine.
3. History
The legal events behind this entry, dated and oldest first. Our own reviews and corrections are listed under Changes to this record.
Ann Arbor City Council passes a resolution (Sep 21, 2020) making enforcement against entheogenic plants and fungi, including psilocybin, the city's lowest law enforcement priority.
Decriminalized status takes effect.
Washtenaw County Prosecuting Attorney issues Policy Directive 2021-06 (Jan 12, 2021), declining to charge personal use, growth, and possession of entheogenic plants and fungi countywide.
Detroit voters approve ballot Proposal E (Nov 2, 2021), making adult personal possession and therapeutic use of entheogenic plants the city's lowest law enforcement priority.
Hazel Park City Council passes a resolution (Mar 22, 2022) deprioritizing enforcement against entheogenic plants and fungi.
Ferndale City Council passes a deprioritization resolution (Feb 27, 2023) covering entheogenic plants and fungi.
Ypsilanti City Council passes a deprioritization resolution (Jan 9, 2024) covering entheogenic plants and fungi.
HB 4686 introduced in the Michigan House (Jun 25, 2025); the bill would exempt adults with a PTSD diagnosis from state psilocybin and psilocin penalties. It was referred to the House Committee on Families and Veterans, with no further action to date.
4. Proposed laws
Proposals that are not yet law and would change this entry if adopted.
HB 4686 (2025): would exempt adults with a PTSD diagnosis from state psilocybin/psilocin penalties; introduced Jun 25, 2025, in House Committee on Families and Veterans with no further action. Decriminalize Nature Michigan continues pursuing a statewide decriminalization ballot initiative.
5. Common questions
Is psilocybin legal in Michigan?
Psilocybin is decriminalized in Michigan. City level only; illegal under state law.
Are magic mushrooms ("shrooms") legal in Michigan?
"Magic mushrooms" and "shrooms" are common names for fungi that contain psilocybin, and this entry states the law on psilocybin itself, which some laws treat separately from the fungus. Psilocybin is decriminalized in Michigan. City level only; illegal under state law.
Read the law
Local deprioritization resolutions: Ann Arbor (Sep 21, 2020), Detroit (Nov 2, 2021 ballot Proposal E), Hazel Park (Mar 22, 2022), Washtenaw County (2021), Ferndale (Feb 27, 2023), Ypsilanti (Jan 9, 2024). Psilocybin and psilocyn remain Schedule 1 substances under state law (MCL 333.7212(1)(c)); using either is a misdemeanor under MCL 333.7404(2)(c).1
Sources
This entry's status is checked against the primary sources below, and the methodology explains how each entry is graded for confidence.
- 1.legislature.mi.gov (opens in new tab) · legislature.mi.gov
- 2.Marijuana Moment.Marijuana Moment (opens in new tab) · marijuanamoment.net
This entry is for information only and is not legal or medical advice. Laws change, and enforcement can differ from the letter of the law, so check the current position against the primary sources above before relying on it.
Changes to this record
3 changes on file, the latest on . Show allHide
Every change we have made to this record, dated, corrections included. Nothing changes silently.
Michigan's entry now cites the section of state law that actually lists psilocybin in Schedule 1, and separately the penalty for using it. Nothing about the state's status has changed.
A note in Michigan's entry described an old decriminalization bill as an Oregon-style licensing bill and put it in the wrong session. Corrected against the legislature's record.
Michigan's status held. The bill listed as pending had long since died and was replaced with HB 4686, introduced in 2025 and sitting in committee, and a source that covered only cannabis was swapped out.
Psilocybin Media Group. "Michigan: psilocybin legal status." The Psilocybin Record, accession US-MI-001, version of 28 Sep 2026. https://psilocybinlegalization.com/record/michigan