Before You Grow…
What Every New Cultivator Should Understand First. Most people who fail at their first grow do not fail because they lacked a piece of equipment. They fail…
Growing mushrooms in the USA
State-by-state law, US suppliers, and free cultivation guides that cost nothing.
The United States is where most of the hobby lives and where the law is most layered. Psilocybin is Schedule I federally, Colorado has made personal cultivation lawful for adults under state law, Oregon, New Mexico and Utah run supervised programmes, and a long list of cities has made enforcement its lowest priority. None of those layers cancels the one above it.
This page gathers everything on Psycology a US reader needs: the law for every state we track, the US-based vendors in our directory, the writers who grow here, and the free guides, teks and calculators that other publications sell as courses.
The law in United States
Illegal. Schedule I federally, so unlawful everywhere in federal terms. State law varies enormously and is worth reading separately.
Instrument: Controlled Substances Act, 21 U.S.C. §812. Read the full United States entry.
State by state
Psilocybin is Schedule I under federal law in the United States, whatever this state does.
- Arizona: Illegal
- California: Illegal
- Colorado: Not controlled
- Florida: Illegal
- Georgia: Illegal
- Illinois: Illegal
- Massachusetts: Illegal
- Michigan: Illegal
- Minnesota: Illegal
- Missouri: Illegal
- Nevada: Illegal
- New Jersey: Illegal
- New Mexico: Supervised access
- New York: Illegal
- Oregon: Supervised access
- Pennsylvania: Illegal
- Texas: Illegal
- Utah: Supervised access
- Washington: Illegal
- Washington DC: Illegal
Start here
Suppliers who ship to USA
- Culture Cave (Worldwide) · marketplace, genetics, equipment
- hyphive (Worldwide) · marketplace, equipment, recommerce
- Mushrealm USA (USA) · genetics, liquid culture, bag grows
- Telly Monster Myco (USA) · genetics, bag grows, grow operations
- Black Forest Cultures (USA) · genetics
- Brown Treasure (USA) · genetics
- Clem Grows (USA) · genetics
- ClusterDuck Mycology (USA) · genetics
- Dino Spores (USA) · genetics
- Fungus Frequency (USA) · genetics
- Happi Hyphae (USA) · genetics
- Hyphal Mind (USA) · genetics
- MadHat Myco (USA) · genetics
- Moondaddy (USA) · genetics
- Mycelial Madness (USA) · genetics
- Pheno Dreamers (USA) · genetics
- PsyTeam United (USA) · genetics
- Purple Mountain Inoculation (USA) · genetics
- Sonoran Spores (USA) · genetics
- Spore Sorcery (USA) · genetics
- Sporeworks (USA) · genetics
- Tropical Galaxy (USA) · genetics
- Tryptomics (USA) · genetics
- Twisted Tree Nursery (USA) · genetics
- White Rabbit Myco (USA) · genetics
Writers based in United States
- Mushrealm ACS, The bag grow king
- Telly Monster Myco, Bag grows & operations
- Michael0gical, Teks, guides & agar
Latest guides
How to Store Your Cultures
A Guide to Short- and Long-Term Preservation. Whether you're holding onto a favorite genetic for a few weeks or archiving it for years, how you store your…
Semi-Solid Liquid Culture
One gram of agar per litre turns a liquid culture into something you can actually read. Germinate spores, pick a single colony, and see contamination…
How AI Is Poisoning Mycology
From misidentified mushrooms to drained data centers, AI is creeping into every corner of mycology, and it is leaving the field worse off: less safe, less…
What a First Grow Actually Costs in 2026
Three itemised budgets, priced in pounds, dollars and Australian dollars, against the four-hundred-pound starter bundles. Most of what you spend, you spend…
How We Got Here: A Short History of the Hobby
From Exprimenting to Shroomery to Discord. What we gained, and what we lost along the way.
What Psilocybin Does to the Brain
The default mode network, the loosening of the self, and why the science keeps arriving at the same strange place the growers already described.
The Decriminalization Map, 2026
Where personal cultivation sits with the law this year, from Oregon and Colorado to the quiet reforms nobody reported. A living, sourced tracker.
PF Tek vs Monotub: Which First Grow?
The oldest beginner method against the modern workhorse. One teaches you the fundamentals in miniature; the other gives you a harvest worth the wait.
Reading Your Grow
A field guide to the question every grower asks at 2am: is that white fuzz my mycelium, or is it the thing that ends the grow?
Questions USA readers ask
Is it legal to grow psilocybin mushrooms in the United States?
Psilocybin is Schedule I under federal law everywhere in the US. Under state law, Colorado allows adults 21 and over to grow and share, Oregon, New Mexico and Utah allow use only inside licensed or clinical programmes, and most other states treat cultivation as a felony. Several cities have deprioritised enforcement, which is not the same as legal. Read your state's page.
Are mushroom spores legal in the US?
Spores contain no psilocybin and are sold openly for microscopy in most states, but a small number of states ban them outright, and germinating them is cultivation wherever the mushrooms are controlled. Check your state's page before buying.
Which US suppliers are listed?
The directory lists US-based spore, culture and kit vendors with a note on what each ships. Listings are kept to vendors the writers know. Nothing on Psycology is for sale.
Where should a first-time grower start?
With the six-stage Grow Guide, then the Tek Ladder, which puts every guide in the order it should be read, starting with sterile technique and a law check before anything is bought.
Other regions: United Kingdom · Australia