Grow gourmet edible mushrooms with ease using our Pasteurized Manure Mushroom Substrate. Specially formulated with field-leached horse manure, this premium substrate is fortified with essential nutrients, creating an ideal growing environment for a wide range of mushroom species.

Our manure substrate is pasteurized, sealed in large mushroom grow bags with 0.5 µm filter patches for optimal air exchange and contaminant-free cultivation. Perfect for pairing with sterilized rye grains and our high-quality mushroom grain spawn, this substrate ensures reliable and robust mushroom growth.

Each package includes 5 x 1lb bags of ready-to-use substrate, giving you flexibility to create personalized mushroom grow kits. Whether you're a beginner or a seasoned cultivator, our substrate eliminates the hassle of adjusting humidity or battling contaminants—just inoculate and grow!

Important Note: Starting from spore solution? Begin with sterilized rye grains before transitioning to manure substrate for best results.