Colorado law does not set a gram or ounce limit on psilocybin mushrooms for adults. Under Proposition 122, which voters approved in 2022, and a 2023 law that wrote its rules into the criminal code, a person 21 or older who possesses, uses, shares, or grows psilocybin mushrooms for personal use, without being paid anything for them, does not violate state law. The limits that do exist are about age, selling, public use, and the size and security of a home grow. Federal law has not changed, and psilocybin is still illegal under it.
Key Takeaways
- Adults 21 and older may possess, use, share, and grow psilocybin mushrooms for personal use. Colorado sets no weight limit on how much they may possess.
- Selling mushrooms, or giving them in exchange for anything of value, is not protected and can be charged as a drug felony.
- A home grow must fit within a total area of 12 feet by 12 feet on private property and be kept in an enclosed and locked space.
- Possession or use by anyone under 21, and open and public display or use at any age, are drug petty offenses.
- Cities and counties may not impose greater criminal or civil penalties than state law provides.
- Psilocybin is still a Schedule I controlled substance under federal law.
What Colorado Law Provides
- The Natural Medicine Health Act of 2022. Proposition 122 is codified in article 170 of Title 12. In the measure itself, voters stated that one of its purposes was “removing criminal penalties for personal use for adults twenty-one years of age and older” (C.R.S. 12-170-102(1)(j)(I)). It took effect December 27, 2022.
- Personal use is lawful. A person who, for personal use and without remuneration, possesses, consumes, shares, cultivates, or manufactures natural medicine “does not violate state law,” or any local ordinance, unless the law expressly limits it (C.R.S. 18-18-434(5)(a)). The section sets no amount limit. “Natural medicine” means psilocybin, psilocin, DMT, mescaline (not including peyote), and ibogaine (C.R.S. 18-18-434(12)(b)). Police may not arrest, and prosecutors may not charge, a natural medicine offense under this part of the drug code except as the section expressly provides (C.R.S. 18-18-434(5)(d)).
- What is still an offense under C.R.S. 18-18-434:
- Possession or use by a person under 21 is a drug petty offense: a fine of up to $100 or up to 4 hours of substance use education or counseling. A second or later conviction can also bring up to 24 hours of useful public service (subsection (1)).
- Openly and publicly displaying or consuming natural medicine is a drug petty offense: a fine of up to $100 and up to 24 hours of useful public service (subsection (2)).
- Growing in an area larger than 12 feet by 12 feet, or outside an enclosed and locked space, is a drug petty offense with a fine of up to $1,000 (subsection (3)).
- Making natural medicine products with an inherently hazardous substance, such as butane or propane, without a state license is a level 2 drug felony (subsection (4)).
- Selling is not protected. The personal-use protection does not cover selling or distributing for remuneration outside the state licensing system, or giving natural medicine to anyone under 21 (C.R.S. 18-18-434(5)(c)). “Remuneration” means anything of value, including money, property, or a service (C.R.S. 18-18-434(12)(f)). Psilocybin and psilocyn are still on Colorado’s Schedule I (C.R.S. 18-18-203), so selling them is charged under C.R.S. 18-18-405.
- Driving. Being allowed to use natural medicine is not a defense to any charge related to operating a vehicle, boat, aircraft, or machinery, such as driving under the influence (C.R.S. 18-18-434(8)).
- Local governments. A county or city may not adopt or enforce a greater criminal or civil penalty than C.R.S. 18-18-434 provides (C.R.S. 18-18-434(9); C.R.S. 12-170-115).
What Federal Law Provides
Colorado’s law does not change federal law. Psilocybin and psilocyn are listed in Schedule I of the federal Controlled Substances Act (21 U.S.C. 812(c)). A first federal conviction for simple possession carries up to one year in prison, a fine of at least $1,000, or both (21 U.S.C. 844(a)).
Understanding Psilocybin and Its Effects
Although psilocybin has gained attention for its potential therapeutic benefits, it is vital to understand its effects on the human body and mind. Psilocybin, a naturally occurring compound found in certain mushrooms, interacts primarily with serotonin receptors in the brain. This interaction can lead to altered perceptions, mood changes, and a sense of detachment from reality. The mushroom effects often include visual and auditory hallucinations, enhanced emotional experiences, and profound introspective insights.
When they approved Proposition 122, Colorado voters found: “An extensive and growing body of research is advancing to support the efficacy of natural medicines combined with psychotherapy as treatment for depression, anxiety, substance use disorders, end-of-life distress, and other conditions” (C.R.S. 12-170-102(1)(c)). That is a finding by the voters, not a medical promise. Individual reactions vary, and not all experiences are positive, so caution is warranted for anyone considering psilocybin for therapeutic or recreational purposes.
Recent Legal Changes in Colorado
Colorado’s approach to psilocybin mushrooms has changed more in the last few years than its approach to almost any other drug. In 2022, Colorado voters approved Proposition 122, the Natural Medicine Health Act of 2022, which took effect December 27, 2022 (C.R.S. 12-170-101 and 12-170-102). In 2023, the legislature passed Senate Bill 23-290, which added C.R.S. 18-18-434 to the criminal code effective July 1, 2023. That section spells out what adults 21 and older may do and what remains an offense. It does not set a gram or ounce limit on personal possession.
The law also created a licensed system for supervised use. The Division of Professions and Occupations in the Colorado Department of Regulatory Agencies licenses facilitators, the people who provide and supervise natural medicine services (C.R.S. 12-170-104). The Natural Medicine Division in the Colorado Department of Revenue licenses healing centers and other natural medicine businesses (C.R.S. 44-50-201). A healing center is a licensed facility where a facilitator provides and supervises natural medicine services for a participant (C.R.S. 44-50-103(6)), and the facilitator must verify that the participant is 21 or older (C.R.S. 44-50-401(3)).
Decriminalization vs. Legalization
The distinction between decriminalization and legalization is vital in understanding the evolving landscape of psilocybin use in Colorado. Decriminalization typically reduces penalties associated with possession, while legalization involves a regulatory framework that allows for controlled distribution and use. Analyzing the effects of each approach reveals significant implications for public health, law enforcement, and societal attitudes toward psychedelics.
For adults, Colorado’s law goes further than lowering penalties. It provides that personal use without remuneration does not violate state law at all (C.R.S. 18-18-434(5)(a)). It also sets up a regulated system of licensed healing centers and facilitators. For anyone under 21, the conduct is still an offense.
Understanding Decriminalization Effects
While the terms “decriminalization” and “legalization” are often used interchangeably, they represent distinct legal frameworks that significantly impact the use of substances like psilocybin mushrooms. Decriminalization benefits primarily include the reduction of criminal penalties associated with shroom usage, allowing individuals to possess and use psilocybin without fear of arrest or prosecution. This framework shifts the focus from criminal justice to public health, potentially fostering a safer environment for users while promoting education about responsible use. However, decriminalization does not provide a regulated market or commercial sales, which can limit access and safe consumption. Understanding the nuances between these approaches is crucial for evaluating the implications of psilocybin use in Colorado and beyond.
Legalization Implications Explained
Decriminalization and legalization represent two distinct pathways for the regulation of psilocybin mushrooms, each with its own set of implications for public health, safety, and access. Legal implications differ significantly between the two approaches; decriminalization reduces penalties but does not create a regulated market, while legalization establishes regulations and oversight. This can enhance safety through quality control and responsible use, addressing public health concerns. Cultural perceptions also shift under these frameworks; decriminalization may normalize psilocybin use without government endorsement, while legalization can foster acceptance and integration into therapeutic practices. Understanding these implications is essential for policymakers as they navigate the evolving landscape surrounding psilocybin mushrooms and consider potential impacts on society.
Personal Use Limits for Psilocybin Mushrooms
Colorado does not limit how much psilocybin an adult may possess for personal use. The limits the law does set turn on who is using it, where, whether anything of value changes hands, and how a home grow is kept. All of the rows below come from C.R.S. 18-18-434 unless another statute is named.
| Usage Category | Legal Limit |
|---|---|
| Adult (21+) possession, use, or sharing for personal use, with nothing of value exchanged | Lawful. No weight limit (subsection (5)(a)) |
| Home cultivation | 12 feet by 12 feet total, on private property, in an enclosed and locked space (subsection (3)) |
| Possession or use by a person under 21 | Drug petty offense: fine up to $100 or up to 4 hours of substance use education (subsection (1)) |
| Open and public display or use | Drug petty offense: fine up to $100 and up to 24 hours of public service (subsection (2)) |
| Selling, or sharing for anything of value | Not protected. Drug felony under C.R.S. 18-18-405 |
Understanding these rules is essential for anyone considering personal use of psilocybin mushrooms in Colorado.
Cultivation and Possession Regulations
Colorado regulates home growing by area and by security, not by a count of plants or mushrooms. Possession is not limited by weight. What matters is purpose: possession for personal use is protected, while possession for sale or for a business is not.
Personal Cultivation Guidelines
An adult may grow psilocybin mushrooms for personal use, subject to these rules in C.R.S. 18-18-434(3):
- Size. All growing areas on the property together may not exceed 12 feet wide by 12 feet long. A larger area is a drug petty offense with a fine of up to $1,000, unless the county or city expressly permits a larger area and the grow stays within that local limit and is enclosed and locked.
- Location and security. The grow must be on private property, meaning a home, its curtilage, or a structure within the curtilage used as a residence and not open to the public (C.R.S. 18-18-434(12)(e)). It must be in an enclosed and locked space. Growing outside an enclosed and locked space is a drug petty offense with a fine of up to $1,000.
- Homes with people under 21. For an adult growing inside a home, the rule depends on who lives there. If someone under 21 lives in the home, the growing area itself must be enclosed and locked. If no one under 21 lives there, the home’s outside locks are enough, but when a person under 21 visits, the grower must reasonably restrict access to the growing area during the visit.
- Landlords and owners. A person who owns or controls a property may prohibit or regulate growing natural medicine on it (C.R.S. 18-18-434(10)). A lease can forbid it.
Possession Limits Explained
Colorado sets no gram or ounce limit on psilocybin possessed for personal use. Instead, the line is drawn by purpose. The personal-use protection does not cover possession with intent to sell for remuneration, or possession for business or commercial purposes outside the state licensing system (C.R.S. 18-18-434(5)(c), (12)(d)).
Conduct that is lawful under the natural medicine law may not, by itself, be the basis for probable cause to believe a crime was committed. It may be one factor if the original stop or search was lawful and other factors support probable cause (C.R.S. 18-18-434(7)).
Extracting or processing mushrooms with an inherently hazardous substance, such as butane or propane, is not protected. Without a state license, it is a level 2 drug felony (C.R.S. 18-18-434(4)).
The Role of Medical and Therapeutic Use
Colorado’s law created a path for supervised therapeutic use alongside personal use. Adults 21 and older can receive natural medicine services at a licensed healing center from a licensed facilitator (C.R.S. 44-50-103(6); C.R.S. 12-170-104). A healing center may not provide more than an amount set by state rule to a participant in a single administration session, subject to exemptions the state may create (C.R.S. 44-50-401(5)).
Voters stated that one purpose of the law was “Establishing regulated access by adults twenty-one years of age and older to natural medicines that show promise in improving well-being, life satisfaction, and overall health” (C.R.S. 12-170-102(1)(j)(III)). Research on psilocybin’s medical uses is ongoing, and anyone considering it for a health condition should talk with a medical provider.
As Colorado pioneers this legal landscape, the implications for integrating psilocybin into therapeutic practices are significant, potentially reshaping approaches to mental health care and expanding options for patients seeking alternative treatments.
Potential Legal Consequences
Colorado’s personal-use protection is broad, but it has edges, and crossing them can mean serious charges. Psilocybin is also still a Schedule I substance under federal law (21 U.S.C. 812(c)), and a first federal conviction for simple possession carries up to one year in prison, a fine of at least $1,000, or both (21 U.S.C. 844(a)).
Under Colorado law, the most serious exposure comes from selling. Selling or possessing with intent to sell is charged under C.R.S. 18-18-405, and the level depends on the weight of the material that contains the drug, not just the psilocybin in it:
| Conduct | Level | Presumptive sentencing range |
|---|---|---|
| Selling 14 grams or less (18-18-405(2)(c)(I)) | Level 3 drug felony | 2 to 4 years |
| Selling more than 14 grams, up to 225 grams (18-18-405(2)(b)(I)(A)) | Level 2 drug felony | 4 to 8 years |
| Selling more than 225 grams (18-18-405(2)(a)(I)(A)) | Level 1 drug felony | 8 to 32 years |
| An adult transferring any amount to a minor at least two years younger (18-18-405(2)(a)(II)) | Level 1 drug felony | 8 to 32 years |
The ranges come from C.R.S. 18-1.3-401.5. Section 18-18-405(8) lowers some sales of 4 grams or less to a level 1 drug misdemeanor, but only when the person reports a drug overdose in good faith or seeks aid for the person who overdosed, stays at the scene, identifies themselves and cooperates, and the offense arose from the same events as the overdose.
Two other points matter for people already in the court system. Lawful use of natural medicine is not a new offense that violates probation, and a court may not prohibit lawful use as a condition of probation (C.R.S. 18-1.3-204(1)(c), (2)(a)(VIII)). And lawful use is no defense to a charge of driving under the influence (C.R.S. 18-18-434(8)).
Navigating Local Ordinances
State law now sets the rules for psilocybin statewide, and local governments have limited room to change them. Before the state law, Denver voters passed Ordinance 301 in May 2019, which made adult personal possession and use of psilocybin the lowest law enforcement priority in Denver (C.R.S. 12-170-102(1)(g)). Today, a county or city may not adopt or enforce any ordinance imposing a greater criminal or civil penalty than state law provides (C.R.S. 18-18-434(9)), or any ordinance that conflicts with the Natural Medicine Health Act (C.R.S. 12-170-115).
Local governments do keep some authority. A county or city may expressly permit home grows larger than 12 feet by 12 feet (C.R.S. 18-18-434(3)(c)). A local government may not prohibit a licensed facilitator from providing natural medicine services within its boundaries, and may not adopt ordinances that are unreasonable or conflict with the Act (C.R.S. 12-170-112). Separately, private property owners and landlords may prohibit growing on their property (C.R.S. 18-18-434(10)).
Perspectives From Advocates and Opponents
The debate surrounding the legalization of psilocybin mushrooms in Colorado encompasses a range of perspectives from both advocates and opponents. Proponents argue for the potential therapeutic benefits and the importance of personal freedom, while critics raise concerns about public health and safety implications. Understanding these contrasting viewpoints within the context of the current legal framework is crucial for a comprehensive analysis of the issue.
Legalization Advocates’ Arguments
Advocates for the legalization of psilocybin mushrooms in Colorado present a range of arguments that highlight potential benefits both for individuals and society. They emphasize mental health treatment, personal freedom, and economic opportunities as core aspects of their advocacy strategies. By improving public perception of psilocybin’s therapeutic effects, proponents aim to dismantle stigma and promote research.
| Argument Category | Key Points | Potential Impact |
|---|---|---|
| Mental Health | Reduces anxiety and depression | Enhances overall well-being |
| Personal Freedom | Individual choice in substance use | Supports autonomy |
| Economic Opportunities | Growth in wellness tourism | Job creation and local business boost |
| Public Health | Decreases substance abuse rates | Improves community health |
| Research Advancement | Encourages scientific study | Expands knowledge on psychedelics |
Opponents’ Concerns
Despite the compelling arguments put forth by legalization advocates, concerns from opponents remain significant in the discourse surrounding the use of psilocybin mushrooms in Colorado. Critics emphasize potential health risks associated with psilocybin use, including psychological effects that could lead to addiction concerns. Public safety is another pressing issue, as opponents worry about impaired judgment and increased accidents due to mushroom consumption. Additionally, the potential societal impact raises alarms regarding youth access and the normalization of psychedelics. Regulatory issues also come into play, with opponents citing fears of inadequate oversight leading to legal challenges down the line. Furthermore, the spread of misinformation regarding the safety and effects of psilocybin compounds these concerns, complicating the conversation around possible legalization.
Current Legal Framework
The current legal framework in Colorado reflects a balance between the arguments on both sides. Its key elements are:
- A statewide rule that personal possession, use, sharing, and growing by adults 21 and older, without remuneration, does not violate state law (C.R.S. 18-18-434(5)(a)).
- Continuing restrictions on use by people under 21, public use, oversized or unsecured home grows, and all sales outside the licensing system.
- A regulated system of licensed healing centers and facilitators overseen by the Department of Revenue and the Department of Regulatory Agencies (C.R.S. 44-50-201; C.R.S. 12-170-104).
As stakeholders navigate this legal environment, the interplay between public health, personal freedom, and regulatory oversight remains pivotal in shaping the future of psilocybin in Colorado. The legislature can still amend these statutes, so the rules may change.
Resources for Further Information
Accessing accurate and reliable information on the legal status of psilocybin mushrooms in Colorado is vital for individuals seeking to understand the implications of recent legislative changes. The Division of Professions and Occupations in the Colorado Department of Regulatory Agencies licenses and regulates natural medicine facilitators, and the Natural Medicine Division in the Colorado Department of Revenue licenses healing centers and other natural medicine businesses. The statutes themselves, C.R.S. 18-18-434, article 170 of Title 12, and article 50 of Title 44, are the controlling sources. Additionally, organizations such as the Multidisciplinary Association for Psychedelic Studies (MAPS) offer educational materials and updates on ongoing research and advocacy efforts related to psilocybin. Engaging with these resources allows individuals to remain informed and make educated decisions regarding personal use. As the legal framework continues to evolve, staying updated through reliable channels is important for navigating the complexities of psilocybin legality in Colorado.
Frequently Asked Questions
Can I Share My Personal Stash of Shrooms With Friends?
Yes, with limits. Colorado law protects sharing natural medicine for personal use as long as nothing of value is exchanged (C.R.S. 18-18-434(5)(a)). “Remuneration” means anything of value, including money, property, or a service (C.R.S. 18-18-434(12)(f)), so trading mushrooms for something, or charging for them, is not protected. Sharing with anyone under 21 is never protected (C.R.S. 18-18-434(5)(c)(I)). An adult who transfers any amount of a Schedule I substance to a minor who is at least two years younger commits a level 1 drug felony (C.R.S. 18-18-405(2)(a)(II)).
What Are the Penalties for Exceeding Personal Use Limits?
Colorado has no weight limit to exceed. The penalties turn on what a person does. Selling, or possessing with intent to sell, is a drug felony under C.R.S. 18-18-405: a level 3 drug felony for 14 grams or less, a level 2 for more than 14 grams up to 225 grams, and a level 1 for more than 225 grams. A home grow larger than 12 feet by 12 feet, or outside an enclosed and locked space, is a drug petty offense with a fine of up to $1,000 (C.R.S. 18-18-434(3)). Making natural medicine products with butane, propane, or a similar hazardous substance without a license is a level 2 drug felony (C.R.S. 18-18-434(4)).
Are There Age Restrictions for Personal Use of Shrooms?
Yes. The personal-use protection applies only to adults 21 and older. A person under 21 who knowingly possesses or consumes natural medicine commits a drug petty offense, punishable by a fine of up to $100 or up to 4 hours of substance use education or counseling. A second or later conviction can also bring up to 24 hours of useful public service (C.R.S. 18-18-434(1)). Licensed facilitators must verify that participants are 21 or older (C.R.S. 44-50-401(3)).
Can I Consume Shrooms in Public Places?
No. Openly and publicly displaying or consuming natural medicine is a drug petty offense under state law, punishable by a fine of up to $100 and up to 24 hours of useful public service (C.R.S. 18-18-434(2)). A city or county may not impose a greater penalty than that (C.R.S. 18-18-434(9)).
How Does Personal Use Affect Employment or School Policies?
Personal use of substances like shrooms can significantly impact employment policies and school regulations. Employers and educational institutions often maintain strict drug policies, which may include testing and disciplinary actions for violations. Even where personal use is lawful under state law, individuals may face repercussions if they are under the influence during work or school hours. Thus, navigating personal use requires careful consideration of existing policies to avoid potential negative consequences in professional or academic settings.