Reproductive cells produced by mushrooms, used to start new cultures and legal to possess in most US states.
Spores are the reproductive cells of fungi, analogous to seeds in plants. Mushrooms produce millions of microscopic spores, which are released from the gills (or pores) and dispersed by air currents. When spores land on a suitable substrate, they can germinate and grow into new mycelium, eventually producing new mushrooms.
For cultivators, spores are the starting point for growing mushrooms:
Spores are used to inoculate grain, agar, or other substrates, beginning the colonization process.
In the United States, psilocybin mushroom spores occupy a unique legal position:
This legal gray area allows spore vendors to operate openly, selling spores "for microscopy research only."
Spores are the entry point for mushroom cultivation. Understanding what they are, how to work with them, and their legal status is essential for anyone interested in growing. The legal distinction between spores (which don't contain psilocybin) and mycelium/mushrooms (which do) creates a unique situation where the starting materials for cultivation can be legally obtained in most places, even though the end product remains illegal.