Growing Oyster Mushrooms

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Growing Oyster Mushrooms

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Oyster Mushrooms
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Oyster Mushroom Procedure

• Substrate Preparation
• Pleurotis can grow on straw, sawdust, coffee
  grounds
• Pasteurize the straw (substrate)
• Put 2 inches of straw into polyethylene bags.
• Layer with the grain spawn.
• Let incubate for one week.
• Cool to encourage fruiting.

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What is the difference between pasteurization and
sterilization?

• Pasteurization heats the substrate (straw)
  killing competing fungi, nematodes, and insects,
  while leaving beneficial bacteria.
• Sterilization is to make free from living
  microorganisms usually with heat or a chemical
  treatment.

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Incubation versus Fruiting

• Incubation of oyster mushrooms takes place at
  25-30 degrees C.
• Incubation is the growth of the non-reproductive
  structures of the fungi.
• Fruiting takes place after a cooling treatment
  and is the growth of the reproductive structures
  of the mushroom.

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Why cool the fungi to encourage fruiting?

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Why cool the fungi to encourage fruiting?

• In nature mushrooms grow in the wet, cool
  weather. To replicate the change in seasons, we
  can give the fungi a cold treatment.