The season of mushrooms can vary depending on the location and climate. In general, however, the mushroom season typically occurs in the autumn when the weather is much chilly and damper. This is because mushrooms thrive in moist and cool environments somewhere in forests and other wooded areas. As you see in our fanart Cute Fat Mushroom Sticker, we already started the season of mushrooms! But be careful - many of them are poisonous.