Mushroom Spawn
The Best Mushroom Spawn Online for Professional and Hobby Growers
Out-Grow produces the highest quality mushroom spawn available on the market today. With over 15 years of professional mycology experience, we offer fully colonized, ready-to-use mushroom spawn that delivers superior performance and reliability. Each bag or jar is carefully prepared in our laboratory facility using industrial sterilization equipment and premium cultures to ensure maximum viability and contamination-free results.
Premium Mushroom Spawn Backed by Professional Expertise
Our mushroom spawn is produced by experienced mycologists using laboratory-grade equipment and sterile techniques. Every batch undergoes rigorous quality control to ensure consistent performance across all varieties. Out-Grow mushroom spawn features aggressive, healthy mycelium that quickly colonizes substrates, resulting in faster production cycles and higher yields compared to other inoculation methods or competing products.
Comprehensive Selection of Fully Colonized Mushroom Spawn
Out-Grow offers an extensive variety of premium mushroom spawn including popular varieties like Blue Oyster, Pearl Oyster, Pink Oyster, Golden Oyster, Lion's Mane, King Oyster, Shiitake, Maitake, and specialty mushrooms such as Chicken of the Woods, Cauliflower Mushroom, and Cordyceps militaris. Available in convenient 1-quart jars and 3-pound bags, our mushroom spawn provides maximum flexibility for any scale of cultivation.
Ready-to-Use Mushroom Spawn for Immediate Results
Each unit of Out-Grow mushroom spawn provides powerful inoculation potential that can be used immediately upon arrival. Our 3-pound bags can inoculate up to 15 pounds of bulk substrate, while each quart can colonize 5 pounds of substrate or be expanded into 12 quarts through grain-to-grain transfer. This exceptional efficiency makes Out-Grow mushroom spawn the most economical choice for serious cultivators.
Trusted by Commercial Growers and Farmers Since 2010
Out-Grow mushroom spawn has been relied upon by professional cultivators, gourmet mushroom farms, and dedicated hobbyists nationwide for over a decade. Our consistent quality, extensive variety, and professional preparation have established us as the leading source for premium mushroom spawn. When you choose Out-Grow, you're investing in proven performance backed by years of mycological expertise.
Browse our complete selection of premium mushroom spawn below and experience the Out-Grow difference in your next cultivation project.