Why are mushrooms growing in my houseplants?

It happens more often than we think. We go to a plant store or nursery, get the plant of our dreams, and after a few days, we see mushrooms growing in the soil. Why is this happening?

Mushrooms can grow almost anywhere. They spread through airborne spores, and all it takes for the spores to develop is to fall into moist soil rich in organic matter. If they suddenly appear in your soil, it means you have a healthy soil.

Mushrooms thrive in moist soils and humid-warm environments, especially with little air circulation, and houseplants can provide the ideal environment for them. Many houseplants have tropical origins, so we usually keep their soil moist and under bright, indirect, natural light. A similar environment to what the mushrooms would look for under the forest canopy.
 
As common as Mushrooms are, many people tend to avoid them, thinking they may be toxic, and that is a wise decision. But these living organisms are usually harmless, and even beneficial to other plants. Fungi break down dead or decaying organic matter, such as potting material, and dead roots, and release nutrients back into the soil. A process called saprophytism.

So, what to do if you see mushrooms growing in your pots?

Safety first! If you don’t know the type of mushroom growing in your pots, avoid direct contact with them. Get a pair of plastic gloves, and simply pull them out one by one. Their roots are usually shallow and easy to pull out. Discard them in a plastic bag and far from the reach of pets and children.