Instead of seeds, mushrooms produce asexually through spores; it is the contamination of spores that make mushroom growing difficult, as it can destroy a whole crop. Cultivating mushrooms therefore requires a controlled environment and labor. Typical cultivation rooms are 200 square feet in area, requiring a day of tending (8 hours) every seven days. For each day after 10 days of not tending the crop, there is a 10% chance of the spores becoming contaminated, initiating a disease that will destroy 10% of the crop every three days.
Yield is 50 lbs. of mushrooms per month. If poisonous mushrooms are grown, 3 lbs. of fungi mass can be substituted for vegetable matter in making ingestive poisons.