Grain Spawn

One 5lb bag of grain spawn can grow up to 25lbs of mushrooms when mixed with pasteurized straw! Our grain spawn was designed for straw cultivation, so no special equipment or knowledge is needed to grow at home. All varieties listed are suitable for outdoor cultivation and rotated seasonally.

We recommend picking up chopped straw at your local Tractor Supply Company and Hi-Yield Hydrated Lime at Ace Hardware to pasteurize your substrate, then mix in our grain spawn and watch it grow!

Pearl Oyster | Heat-Loving Oyster | Our Summer oyster mushroom strain has been selected for its rich flavor and is incredibly easy to grow - even in extreme heat

Golden Oyster | Bright & Nutty | Sweet, citrusy flavor that becomes nutty once cooked; prefers warmer temperatures and great in salads or sandwiches

Pink Oyster | Beginner-friendly | Summertime favorite that is easy to grow and loves the heat; firmer texture and unique flavor compared to other varieties