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Is psilocybin legal in California? Where else is it legal? The Legality of Psilocybin with References:


Psilocybin, a naturally occurring psychedelic compound found in certain species of mushrooms, has gained significant attention in recent years for its potential therapeutic benefits. However, the legal status of psilocybin and psilocybin mushrooms varies across different jurisdictions, including within the state of California.

As of my knowledge cutoff in September 2021, psilocybin and psilocybin mushrooms are classified as Schedule I substances under the federal Controlled Substances Act (CSA), which means they are considered illegal at the federal level. However, individual states have the authority to establish their own laws regarding controlled substances, leading to variations in the legal status of psilocybin across the United States.

In California, psilocybin and psilocybin mushrooms are currently illegal for recreational and medical use. The possession, cultivation, sale, and transportation of psilocybin mushrooms are considered criminal offenses under state law.

The California Psilocybin Initiative 2024

Despite the current illegality, there is a growing movement to decriminalize and legalize psilocybin mushrooms for medical and therapeutic use in California. The California Psilocybin Initiative 2024 (CPI 2024) is an upcoming ballot initiative aimed at achieving this goal.

If passed, the CPI 2024 would allow individuals aged 21 and older to possess, cultivate, and consume psilocybin mushrooms for personal use. The initiative also seeks to establish a regulated system for the cultivation, distribution, and sale of psilocybin mushrooms, similar to the existing framework for cannabis in the state.

Advocates of the CPI 2024 argue that psilocybin mushrooms have shown promising results in treating various mental health conditions, including depression, anxiety, and PTSD. They believe that legalizing and regulating psilocybin mushrooms can lead to improved access to these potential therapeutic benefits, while also generating tax revenue and reducing the burden on the criminal justice system.

Legalization Examples in Other States

California is not the first state to consider the legalization of psilocybin mushrooms. Several other states have already taken steps towards reforming their laws to allow for the use of psilocybin in certain contexts.

Oregon: In November 2020, Oregon became the first state to legalize the therapeutic use of psilocybin in supervised settings. Measure 109 allows licensed medical professionals to administer psilocybin to patients for therapeutic purposes.

Colorado: In May 2019, Denver, Colorado, became the first city in the United States to decriminalize psilocybin mushrooms. The initiative does not legalize their sale or commercial distribution but makes personal possession and use the lowest law enforcement priority.

Washington, D.C.: In November 2020,Washington, D.C. passed Initiative 81, which effectively decriminalized the use and possession of entheogenic plants and fungi, including psilocybin mushrooms. The initiative makes the enforcement of laws related to these substances the lowest priority for law enforcement.

Additionally, several other states have seen efforts to explore the potential therapeutic use of psilocybin or decriminalize its possession and use, including Massachusetts, Michigan, and California itself with the previously mentioned CPI 2024.


The legal status of psilocybin mushrooms in California remains illegal for recreational and medical use. However, the California Psilocybin Initiative 2024 presents an opportunity for the state to join other jurisdictions in exploring the potential therapeutic benefits of psilocybin and establishing a regulated system for its use.

As the movement towards psilocybin legalization gains momentum across the country, it is essential to stay informed about the latest developments and research surrounding this topic. If you are interested in learning more, consult reliable sources and stay up-to-date with the progress of the California Psilocybin Initiative 2024 and related legislative efforts in other states.


  1. Multidisciplinary Association for Psychedelic Studies (MAPS)
  2. Drug Enforcement Administration (DEA)
  3. Ballotpedia – California Psilocybin Mushroom Legalization Initiative (2024)
  4. Psychedelic Medicine: The Potential Role of Psychedelics in Mental Health Care
  5. The Guardian – Oregon becomes first US state to decriminalize hard drugs
  6. The Denver Post – Denver becomes the first city in the U.S. to decriminalize psilocybin mushrooms
  7. Ballotpedia – Washington, D.C. Entheogenic Plants and Fungi Measure (November 2020)
  8. Ballotpedia – Massachusetts Psilocybin Mushroom Decriminalization Initiative (2022)
  9. Ballotpedia – Michigan Psilocybin Mushroom Decriminalization Initiative (2022)
  10. Ballotpedia – California Psilocybin Mushroom Legalization Initiative (2020)

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