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Description

About Our BRF Grain Spawn Bag – Sterilized Brown Rice Flour Substrate

Out-Grow’s BRF Grain Spawn Bag is a professionally prepared mushroom substrate made from finely milled brown rice flour, fully hydrated and sterilized for clean, reliable cultivation. This 8-ounce bag offers a ready-to-use medium ideal for colonizing gourmet and medicinal mushroom species in a simple, self-contained grain spawn format.

Lab-Prepared and Sterilized for Consistent Results

Each BRF grain spawn bag is created in our professional mycology laboratory using industry-grade sterilization procedures. We use high-quality brown rice flour to produce a nutrient-rich environment that supports aggressive mycelial growth and strong fruiting. The substrate is carefully hydrated and sterilized to eliminate contaminants and ensure dependable colonization.

A Grain Spawn Bag Designed for Simplicity and Performance

This sterilized grain spawn bag is perfect for cultivators who want to avoid jars or extra equipment. Whether you're a beginner looking for an easy entry point or a seasoned grower seeking a convenient solution, our BRF grain spawn bags deliver consistent results without the complexity of traditional setups.

Backed by Over 15 Years of Grain Spawn Expertise

With over a decade of experience producing sterilized substrates and grain spawn bags for growers nationwide, Out-Grow is a name cultivators trust. Our BRF grain spawn bags reflect the same commitment to quality and performance that has made us a leader in mushroom cultivation supplies since 2010.