10 Pounds Sterilized Mushroom Substrate

All Orders Ship FREE to the lower 48

The Best Sh*t On The Market, Period.

We take well composted horse manure, add some peat for aeration, gypsum, water and that's it. Keep it simple. We don't add vermiculite, it's environmentally unfriendly, bad for our lungs, doesn't hold water any better, and has no nutritive value.

The substrate is sterilized not pasteurized.

Perfectly hydrated and ready to use in a mono-tub. 

Match each bag of substrate up with 2 of our spawn bags to complete the package

• 10 pounds per bag.

• 1-2 bags for a 50-60 quart tub

• 2-3 bags for a 100 quart tub