In the heart of our California farm, we prepare each Premium Organic Rye Spawn Bag with patience and precision. Premium rye grain is carefully measured and sealed into high-quality filter bags, then sterilized for four full hours to create a pure, uncontaminated foundation. After sterilization, the bags are left to cool slowly and naturally over the course of a full day, preserving the integrity of the grain and ensuring maximum readiness for your mycelium.
The result is a clean, nutrient-rich substrate — the perfect blank canvas for successful colonization. We offer these in convenient sets of two bags, each containing 2.25 to 2.5 pounds of sterilized rye grain. Whether you are beginning your cultivation journey, expanding your home grow, or an experienced mycologist seeking reliable, trusted spawn bags, this set provides a consistent and dependable starting point.
Each bag carries the quiet intention of our farm: pure grain, thorough sterilization, and thoughtful preparation. A direct connection to the foundational work of mushroom cultivation, brought from our fields to your lab or growing space.

What’s Included
•  2 Premium Organic Rye Grain Spawn Bags (2.25–2.5 lbs each) — ready for immediate use
•  Cereal-grade organic rye berries, pure mineral water, gypsum, and carefully selected nutrient-enhancing herbs for strong mycelium growth
•  Self-healing high-temperature injection ports designed for sterile and convenient inoculation
•  Durable 3mm polypropylene bags with 0.22-micron filter patches for optimal gas exchange and contamination protection
•  Detailed step-by-step instruction.

Enjoy free shipping on all purchases over $30, ensuring that your mycology essentials arrive at your doorstep without added costs. Additionally, for orders of $150 and more, we offer priority mail shipping, so you can receive your products promptly and efficiently.

All orders ship the same business day if an order is placed before noon Pacific Standard Time . After 12pm PST or on weekends, orders will ship the next business day. All orders are shipped with the United States Postal Service and usually take 3-4 business days to be delivered.

All orders are provided a tracking number via a confirmation email.