Introducing Straw Substrate Bags

These pasteurized straw pulp mushroom grow bags are ideal for cultivating Oyster and Lion’s Mane mushrooms. Made from 100% ultra-fine, additive-free straw, the substrate is finely milled to eliminate sharp stems that can puncture the bag while promoting rapid, even colonization. Straw pulp is well known for its fast colonization speed and reliable fruiting performance.

For growers looking for a slightly lighter, more breathable substrate, we also offer a 50% straw and 50% oak wood pulp blend. This balanced mix provides the benefits of wood nutrition with a less dense structure than straight oak pulp, making it an excellent option for wood-loving species that prefer improved airflow and quicker colonization.