About Our Sterilized Rye Grain Spawn Bag – 1lb (No Injection Port) Out-Grow's Sterilized Rye Grain Spawn Bag is a professional-grade substrate prepared for experienced cultivators who prefer grain-to-grain transfers or agar wedge inoculation. This 1lb bag of select-grade rye berries is fully hydrated and pressure sterilized to eliminate contaminants and ensure optimal conditions for rapid colonization. Prepared in a Professional Mycology Laboratory Every rye grain spawn bag is produced in our commercial-grade facility, where we’ve specialized in mushroom substrate preparation for over 15 years. The grain is sterilized at 15 PSI for three hours and sealed in a high-quality gusseted grow bag equipped with a 5-micron filter patch. This allows for efficient gas exchange while maintaining a clean, sterile environment for your mycelium to thrive. Ideal for Experienced Cultivators and Grain Transfers This version does not include a self-healing injection port, making it best suited for cultivators using sterile technique for grain-to-grain transfers or direct inoculation with agar wedges. This option provides a cost-effective solution without compromising on quality, giving experienced growers more flexibility and control over their process. Consistent Quality, Backed by Decades of Experience Out-Grow has supplied sterilized grain substrates to growers across the country since 2010. Our rye berry spawn bags are trusted in both home and commercial environments for their reliability, consistency, and performance. Whether you're expanding a master culture or scaling up production, this substrate provides a clean, nutrient-rich foundation for strong mycelium growth. Order today and experience the professional quality that has made Out-Grow a trusted name in mushroom cultivation for over a decade. Also available with injection port: Sterilized Rye Berry Grain Spawn Bag – 1lb With Injection Port Need mushroom substrate? Shop Manure Based Mushroom Substrate - 5lbs
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