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StateCounty/CityLaw NameDate EnactedSummaryLegal StatusExternal ReferencesNotes
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CaliforniaOaklandMeasure Z06/04/2019Decriminalizes the use and possession of psilocybin mushrooms for adults 21 and older.Decriminalizedhttps://oakland.legistar.com/LegislationDetail.aspx?ID=3993960&GUID=5E0A70D8-4AFC-40DE-9C7E-7F7598B7B1D8Applies to adults over 21.Contact shannon@shroomer.com to get in touch with the Editorial team.
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CaliforniaSanta CruzDecriminalization Ordinance01/28/2020Decriminalizes possession, use, and cultivation of psilocybin mushrooms for adults.Decriminalizedhttps://www.cityofsantacruz.com/Home/Components/News/News/9286/36Applies to personal use and cultivation.
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CaliforniaArcataMeasure M11/03/2020Decriminalizes the use, possession, and cultivation of entheogenic plants and fungi.Decriminalizedhttps://ballotpedia.org/Arcata_California_Measure_MPrioritizes personal use.
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CaliforniaSan FranciscoBoard of Supervisors Resolution09/06/2022Decriminalizes the possession, cultivation, and personal use of entheogenic plants and fungi, including psilocybin.Decriminalizedhttps://sfbos.org/sites/default/files/r0340-22.pdfEncourages law enforcement to make these activities the lowest priority.
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CaliforniaEurekaResolution No. 2023-3010/17/2023Decriminalizes the possession, cultivation, and personal use of entheogenic plants and fungi, including psilocybin.DecriminalizedEnforcement of laws against these substances is made the lowest priority.
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ColoradoStatewideProposition 12211/08/2022Legalizes possession, use, and growth of certain psychedelics for personal use and therapy.Legalized for personal use and therapyhttps://ballotpedia.org/Colorado_Proposition_122_Decriminalization_and_Regulated_Access_Program_for_Certain_Psychedelic_Plants_and_Fungi_Initiative_(2022)Allows personal use and therapeutic regulation.
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ColoradoDenverInitiative 30105/07/2019Decriminalizes possession and personal use of psilocybin mushrooms for adults.Decriminalizedhttps://www.denvergov.org/content/denvergov/en/denver-council-of-governments/programs-services/decriminalization-of-psilocybin-mushrooms.htmlFirst U.S. city to decriminalize psilocybin.
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ColoradoBoulderCity Council Resolution01/14/2020Directs law enforcement to deprioritize enforcement against possession and use of psilocybin.Decriminalizedhttps://www.bouldercolorado.gov/government/city-council/resolutionsReduces law enforcement actions on psilocybin.
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MassachusettsSomervilleCity Council Resolution01/14/2021Decriminalizes possession and use of entheogenic plants and fungi, including psilocybin.Decriminalizedhttps://www.somervillema.gov/departments/city-councilPart of broader decriminalization efforts.
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MassachusettsCambridgeCity Council Resolution02/03/2021Decriminalizes possession and use of entheogenic plants and fungi, including psilocybin.Decriminalizedhttps://www.cambridgema.gov/citycouncilAligns with neighboring Somerville's efforts.
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MassachusettsNorthamptonCity Council Resolution03/18/2021Decriminalizes the possession, use, and cultivation of entheogenic plants and fungi, including psilocybin.Decriminalizedhttps://www.northamptonma.gov/AgendaCenter/ViewFile/Minutes/_03182021-5485Aligns with decriminalization efforts in neighboring cities like Somerville and Cambridge.
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MichiganAnn ArborCity Council Resolution09/21/2020Decriminalizes the possession, use, and cultivation of entheogenic plants and fungi, including psilocybin.Decriminalizedhttps://www.a2gov.org/departments/city-council/Pages/default.aspxAnn Arbor declared September as Entheogenic Plant and Fungi Awareness Month.
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MichiganDetroitProposal E11/02/2021Decriminalizes the possession and therapeutic use of entheogenic plants, including psilocybin.Decriminalizedhttps://ballotpedia.org/Detroit_Michigan_Proposal_E_Entheogenic_Plants_Decriminalization_Initiative_(November_2021)Part of a broader movement to decriminalize natural psychedelics across the state.
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OregonStatewideMeasure 10911/03/2020Legalizes supervised use of psilocybin for therapeutic purposes.Legalized for therapeutic use under a licensed facilitatorhttps://ballotpedia.org/Oregon_Measure_109_Psilocybin_Mushroom_Services_Program_Initiative_(2020)First state to establish psilocybin therapy.
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OregonStatewideMeasure 110Enacted 11/03/2020, Recriminalized 9/01/2024Illegal (Recriminalized)https://olis.oregonlegislature.gov/liz/2024R1/Measures/Overview/HB4002
Originally decriminalized the possession of small amounts of psilocybin and other drugs, offering civil violations and addiction treatment services instead of criminal charges. Recriminalized possession on 9/1/24.
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WashingtonSeattleCity Council Resolution10/04/2021Deprioritizes enforcement against the possession and personal use of entheogenic plants and fungi, including psilocybin.Decriminalizedhttps://seattle.legistar.com/LegislationDetail.aspx?ID=5144957&GUID=1797D6B0-7B0A-4875-A7A2-98D4780EDBFDSeattle is the largest U.S. city to decriminalize psilocybin and other psychedelics.
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Washington D.C.DistrictwideInitiative 8111/03/2020Decriminalizes entheogenic plants and fungi, making enforcement against these substances the lowest priority.Decriminalizedhttps://ballotpedia.org/Washington_D.C._Initiative_81_Entheogenic_Plants_and_Fungi_Decriminalization_Amendment_Act_of_2020Passage of Initiative 81 signifies growing acceptance of psychedelic decriminalization.
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