Category: Rye grain bags

Pre-sterilised rye grain bags for mushrooms—ready to inoculate and grow. Our mycology-grade rye spawn bags (1 lb, 1 kg, 1.5 kg, 2 kg) are hydrated to field capacity and fitted with a self-healing injection port and filter patch for clean gas exchange. Ideal for spores or liquid culture, grain-to-grain expansion, and fast colonisation before moving to CVG or monotub fruiting. Premium rye delivers excellent kernel separation, easy shake-back, and consistent results—reducing contamination risk and saving prep time. Choose the size that suits your workflow and enjoy fast UK delivery on sterile rye grain for mushroom cultivation.