The fungi, also known as ‘shrooms’ or ‘psilocybin cubensis,’ are growing in popularity — but what are the legal implications of getting your hands on them?

The Magic Mushrooms for Sale answer: it’s complicated. Psilocybin and psilocin are Schedule 1 drugs, meaning they have no approved medical use, are highly addictive, and can cause psychological dependence. Possession and sale of mushrooms is illegal in most states and the DEA will prosecute for any violations. But the law is changing.

In January, Colorado decriminalized mushroom cultivation and sales, but it’s too early to tell if the move will lead to a mushroom boom. Denver, which had a similar law several years before the state’s, is seeing only a handful of mushroom-related criminal charges per year. And though mushroom growers can be arrested for selling the fungi, it’s generally harder to get caught than with marijuana or meth.

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Despite the legal complications, a number of people are finding ways to buy mushroom spores online and at home. Some companies, like PNW Spore Co, are B corporations that focus on doing good in the community instead of just making money. They donate a percentage of their profits to organizations advancing psychedelic research and clinical trials. Spores don’t contain psilocybin and are thus legal in most states, but growing psilocybin-containing mushrooms from the spores is still a crime under federal drug laws. In order to avoid legal risks, it’s important for anyone considering buying spores to be certain they’re doing so for “taxonomy, instruction, or analysis” purposes, and keep paperwork and other evidence of this.