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Sterile Rye Grain Mushroom Substrate Grow Bags

Our signature sterilized rye berries are available in 1, 2, or 4 LB bags, with or without injection ports. We can customize any order, any amount of grain in any size bag. Please don't hesitate to ask how we can make our products work for your needs!

We have sold hundreds of thousands of these bags on eBay, Amazon, and through our website over the years with excellent reviews! Our substrates are always made to order ensuring freshness and are expertly prepared in a sterile environment with the utmost care. We take great pride in attention to detail and sterile techniques to guarantee you will receive nothing but the best possible product at the lowest price. Guaranteed fresh, sterile, and made with correct moisture content. Our quality and service cannot be beat!