Accelerate your mushroom production with our 3 lb Shiitake (Lentinula edodes) Grain Spawn. Formulated for commercial cultivation and dedicated home growers, this spawn features a premium sterilized millet base that provides thousands of inoculation points for faster, even distribution throughout your bulk substrate. It is specifically supplemented with gypsum to prevent grain clumping and supply essential minerals, ensuring vigorous, healthy mycelial expansion. Fully colonized, contaminant-free, and rigorously prepared, this Shiitake spawn is ready to seamlessly inoculate your preferred hardwood fruiting blocks or pasteurized substrates for heavy, reliable yields.