Mushrooms are a type of fungi, and like all fungi, they reproduce by releasing spores. Spores are tiny cells that contain the mushroom's genetic material and can be thought of as its "seeds". When conditions are right, these spores will germinate and grow into new mushrooms.
Most mushrooms need four things to grow:
When you find wild mushrooms growing in nature, it's best not to disturb them too much. If you must pick them, do so carefully so as not to damage the surrounding environment or mycelium (the network of thread-like cells that make up the main body of a fungus).
It's also important to know which species of mushroom you have before consuming it, as some are poisonous!