We Now Accept Bitcoin, Litecoin, Dogecoin, and Dash!

Collection: Sterilized Mushroom Substrates

Avoid the hassle of balancing, mixing, and sterilizing your own growing medium. We offer sterilized substrates supplemented with all the nutrients needed to grow beautiful mushrooms. We only use the thickest bags, and all our substrates are made with 100% certified organic materials.

7 products
  • 2 x 3 lb. Sterilized Rye Berry Mushroom Substrate in Unicorn Bags with Injection Ports for Grain Spawn
    2 x 3 lb. Sterilized Rye Berry Mushroom Substrate in Unicorn Bags with Injection Ports for Grain Spawn
    Regular price
    $43.99
    Sale price
    $43.99
  • 4 x 3 lb. Sterilized Rye Berry Mushroom Substrate in Unicorn Bags with Injection Ports for Grain Spawn
    4 x 3 lb. Sterilized Rye Berry Mushroom Substrate in Unicorn Bags with Injection Ports for Grain Spawn
    Regular price
    $79.99
    Sale price
    $79.99
  • 6 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn
    6 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn
    Regular price
    $38.99
    Sale price
    $38.99
  • 12 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn
    12 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn
    Regular price
    $73.99
    Sale price
    $73.99
  • 18 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn
    18 x 1 lb. Sterilized Rye Berries Mushroom Substrate for Grain Spawn
    Regular price
    $93.99
    Sale price
    $93.99
  • 2 x 5 lb. Sterilized Supplemented Oak Hardwood Substrate
    2 x 5 lb. Sterilized Supplemented Oak Hardwood Substrate
    Regular price
    $37.99
    Sale price
    $37.99
  • 4 x 3 lb. Sterilized Rye Berries Mushroom Substrate
    4 x 3 lb. Sterilized Rye Berries Mushroom Substrate
    Regular price
    $69.99
    Sale price
    $64.99