About The Product
Premium Sterilized Grain Mix
Each bag contains a carefully sourced blend of Milo, enriched with Oyster Shells and Gypsum, providing essential nutrients for vigorous mycelial growth, improved nutrient absorption, and enhanced mushroom cultivation success.
- Milo (Sorghum Grain): A small, round grain that mushrooms love. It’s clean, lightweight, and doesn’t stick together—making it easier for mycelium (the root network of mushrooms) to spread quickly through the bag.
- Oyster Shells: These add calcium to the grain mix and help balance the pH level. Balanced pH means your mycelium won’t struggle to grow in an environment that’s too acidic or too basic. It creates a more stable and healthy growing space.
- Gypsum: A natural mineral (calcium sulfate) that keeps the grains loose and evenly moist. It prevents them from clumping together, so your mycelium can move freely and colonize every part of the bag without resistance.
Industrial-Grade Sterilization & Precise Hydration
Our grain bags are rigorously sterilized in industrial autoclaves to eliminate all contaminants, creating a clean environment for mycelium to grow. After sterilization, the grains are carefully hydrated to the ideal moisture level to create a nutrient-rich foundation that supports strong, healthy mushroom development.
Convenient Self-Healing Injection Ports
Designed for effortless inoculation, each bag is equipped with a self-healing injection port, allowing you to introduce spores or liquid culture with ease while minimizing contamination risks.
High-Yield & Versatile Cultivation
Ideal for growing gourmet and medicinal mushrooms, these grain bags promote rapid mycelial colonization and are compatible with a variety of growing methods, including monotubs, grow bags, and bulk substrate transfers.
Quality-Assured & Sustainably Sourced
Our grain mix is sourced from trusted local farms and tested for sterility and hydration consistency. These bags can be stored at room temperature for several months without refrigeration, ensuring long-lasting freshness
How to Use Our Grain Bags (4 Simple Steps)
Balanced Nutrition. Trusted Sterility. Rapid Growth.
Customer Reviews

5 star | 78 | 78% |
4 star | 22 | 22% |
3 star | 0% | |
2 star | 0% | |
1 star | 0% |
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Good size harvest, definitely worth it for how simple it was.
This substrate mix was balanced really well. It kept moisture just right and supported great growth. Harvest turned out heavy compared to my last attempt.
What stood out to me was how consistent the growth was across the whole bag. Every part filled in evenly and the mushrooms came in thick. Got more than I expected on the first flush.
Easy grain prep
The kit made the process simple enough that I felt confident the whole way. By the second week I had solid growth and soon after, mushrooms started popping up everywhere.