How to Make a Fruiting Chamber

Most mushroom species require a high level of humidity for proper growth given that they are highly susceptible to dehydration. When mushrooms are grown inside, they must be cultivated in a controlled atmosphere that replicates this humid environment. This can be a challenge because the air indoors is usually substantially drier than outdoors. Nevertheless, you can easily create a well-designed fruiting chamber -- essentially a terrarium-like environment -- that promotes adequate air circulation while maintaining a high enough humidity level to allow mushrooms to thrive.

Clear plastic tub with clear lid
Drill
1/2-inch drill bit
Bark mulch
Potting soil
4 bricks

Instructions

- 1
  Drill four evenly spaced rows of holes into the top lid and on all four sides of a clear plastic tub with a 1/2-inch drill bit. Space the holes in each row 2-inches apart from one another.
- 2
  Place the container on the ground and fill the tub to a depth of 6-inches with a 50-50 mixture of organic bark mulch and potting soil. Saturate the medium with water and allow the excess water to drain out the holes in the tub.
- 3
  Set the fruiting chamber on four bricks, one under each corner of the tub. The chamber should be placed in an out of the way spot where it will receive indirect natural light.
- 4
  Sprinkle mushroom spores over the prepared medium. Place the cover on the chamber.

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