Shiitake Mushrooms Substrate consists of Hardwood pellets (a mix of Oak, Maple, and Walnut) and wheat bran.

This blend of ingredients (hardwood pellets and wheat bran) is one of the most commonly used substrates in the commercial Shiitake mushroom growing world. The fact that our Shiitake Mushroom Substrate is pre-mixed makes it exceptionally easy to create your own mushroom fruiting block, by simply adding water to the bag, pressure cooking, and mixing with spawn.

This fruiting substrate can be mixed with colonized spawn to form a medium that contains the nutrients and water-retention capacity necessary to produce multiple flushes of large fruiting bodies. You can expect to yield between 1 and 2 pounds of Shiitake Mushroom by mixing one of our Shiitake Spawn Jars with a whole bag of Shiitake Mushroom Substrate.

This product is sold in a Type 14A 0.5 micron filter patch, autoclavable, Unicorn Brand mushroom grow bag.

THIS IS NOT A PRE-PASTEURIZED/STERILIZED MEDIUM.

THIS MEDIUM SHOULD ONLY BE USED FOR SHIITAKE.

YOU WILL HAVE TO HYDRATE AND PASTEURIZE/STERILIZE THIS MEDIUM YOURSELF.

INGREDIENTS

Hardwood Pellets (Oak, Maple, and Walnut)

Organic Wheat Bran

Total Weight - 1.0kg

INSTRUCTIONS

Add 1400mL of water to the Shiitake Mushroom Substrate bag, and mix well.

Allow mixture to soak for 1/2 hour.

Pasteurize in a conventional oven @180 Degrees Fahrenheit for 6 hours, OR Sterilize at 15PSI/265F for 90 minutes.

Let cool (approximately 4-6 hours) and mix with colonized mushroom spaw. Incubate for 7-10 days. See out tutorials for more in-depth instructions!