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Grow Kit Instructions


  • DO NOT unwrap the plastic from around the block.  The plastic keeps the block from drying out.

  • Cut a 6” crosscut on the side of the block, then face the crosscut up. The mushrooms will grow out of this cut.

  • Place the block in a humid place and spritz with water every few hours.

  • These mushrooms like a lot of water so keep the cross-cut moist!

  • If in a dry climate, place the cheese cloth over the crosscut and spritz it 4-6 times a day to keep the cloth moist.

  • The mushroom block requires some light, but not direct sunlight.  Artificial light is ok, or indirect light from a small window.  A kitchen or bathroom counter is perfect.

  • Mushrooms require fresh air so do not place the block in a closed space.

  • Mushrooms pins will begin to emerge in about 3-5 days and will double in size daily.  Remove the cheese cloth once pins are ½ inch or higher.

  • You may need to expand the cut slightly if you see mushroom pins forming just underneath the edge of the crosscut. 

  • You may see mushrooms pins forming underneath the plastic away from the crosscut.  Do not expose these pins.

  • Mushrooms will be ready to harvest in approximately 7-10 days. 

  • To harvest, put your hand underneath the mushroom cluster and slowly pry the mushroom cluster from the block.  Use scissors to trim any substrate still attached to the cluster.

  • Keep harvested mushrooms in a paper bag in the fridge for best results.  Mushrooms should stay fresh for 5-7 days before showing signs of dryness.

  • To get a second harvest, remove any mushroom tissue still on the block and then pour water onto the block.  Allow the water to soak for 5 to 10 minutes, adding more water as needed to keep the block wet.

  • Drain any excess water from the block and resume regular spritzing to keep the block moist.

  • In 4-6 days, new pins should form on the block.  You may need to expand the cut if you see mushroom pins forming just underneath the edge of the crosscut.

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