Rye Berry Mushroom Jar – Sterilized 1 Quart

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Rye Berry Mushroom Jar – Sterilized 1 Quart for Mushroom Cultivation Out-Grow’s Rye Berry Mushroom Jar is a professionally sterilized 1-quart substrate designed for reliable, fast colonization. Rye berries are one of the most trusted grains in mushroom cultivation thanks to their ideal size, nutrient density, and ability to support healthy mycelial development. This mushroom jar is a clean, convenient solution for growers looking to inoculate bulk substrate or expand to grain-to-grain transfers with confidence. Lab-Prepared Mushroom Jar with Injection Port and Gas Exchange Filter Each jar is filled with premium rye berries, fully hydrated and pressure-sterilized at 15 PSI in our commercial mycology lab. The jar is sealed with a self-healing injection port for easy inoculation and equipped with a 0.22-micron gas exchange filter to maintain a sterile internal environment. This combination supports aggressive mycelial growth while minimizing contamination risk — even in non-lab conditions. Ideal Mushroom Jar for Grain-to-Grain Transfers and Bulk Inoculation This 1-quart mushroom jar contains the right balance of grain volume and oxygen exchange for colonizing up to 5 pounds of bulk substrate. It’s also well-suited for grain-to-grain transfers and intermediate-stage spawn expansion. Whether you're cultivating oyster, lion’s mane, or other gourmet species, sterilized rye grain offers the structure and nutrition needed to support strong, even colonization. Backed by Over 15 Years of Mushroom Cultivation Expertise Since 2010, Out-Grow has been trusted by home growers, educators, and commercial farms alike for professional-grade mushroom cultivation supplies. Our sterilized mushroom jars are produced under strict lab conditions to ensure consistent results with every batch. Store sealed jars in a cool, dry place for up to three months, or use immediately for best performance. Order now and experience the performance of sterilized rye berry mushroom jars from Out-Grow — the trusted choice for consistent, contamination-free cultivation. Also available as Rye Berry Mushroom Jar – Sterilized 1 Pint Need mushroom substrate? Shop Manure Based Mushroom Substrate - 5lbs Show more