PREMIUM RYE GRAIN FOR MUSHROOM GROWING – Carefully selected, organic rye grains ideal for mushroom cultivation. Our mushroom grain bag offers purity and quality for robust mycelium growth. READY TO USE & STERILE – Pre-washed, thoroughly sterilized grains, making this mushroom grain spawn bag perfect for both beginners and experts. HIGH YIELD, INCREASED GROWTH – Optimized for high yield, our rye grain rehydrates to twice its dry mass, giving you more to work with in each grow bag mushroom kit. SEALED & DURABLE PACKAGING – Each bag features a resealable, durable seal, keeping grains fresh for long-lasting use in any mushroom growing kit or indoor setup. VERSATILE FOR HOME OR COMMERCIAL USE – Ideal for use in mushroom kits, grow bags, and other setups, our grains work perfectly for those growing mushrooms at home or on a larger scale. TRUSTED EXPERTISE SINCE 2010 - Professionally crafted by seasoned mycology experts with over 25 years experience in the mushroom farming industry. Our premium substrate has been trusted by growers worldwide for over a decade—helping you grow with confidence every step of the way! 100% SATISFACTION GUARANTEE - Our grow bags are backed by a commitment to quality and your happiness. If you’re not seeing the results you expect, contact us for a fast resolution—we’ll make it right! This sale is for eight pounds of nutrient enhanced organic sterilized rye berries. This product is used as a substrate for mushroom cultivation. It comes packaged in 4 seperate two-pound sealed myco / grow bags with a 0.5 micron filter patch for gas exchange, then shrink wrapped for added protection. Each 2 LB bag is approximately 48 FL OZ in volume. This is equal to 6-8 half pint jars. These bags are guaranteed to arrive to you 100% sterile and ready to inoculate with your favorite mushroom spores or culture! Please note: These bags do not have self healing injection port and are intended more for grain to grain transfers. We do have bags with injection ports available in our store. Please check out our other items for more information. We carry detailed instructions on how to inoculate and cultivate these bags. If you would like a free copy with this purchase please let us know upon ordering. We also carry complete downloadable/printable instructions for all of our products on our website.