Be the first to Write a Review Growing your own organic oyster mushrooms is easy to do with this self-contained kit. Each kit is composed of a sawdust and organic rice bran growing medium that has been inoculated with enough spores to produce one- to two-pound crops of tree oyster mushrooms. Simply set your mushroom kit in a cool indoor spot and, with minimal care, you’ll be harvesting a fresh crop every one to two weeks! With a delicate texture and sweet, mild flavor, oyster mushrooms are delicious in egg dishes, stir-fries, stews, risottos and pastas.