




Brown Rice Flour Mushroom Substrate Bags (24-Pack) – Ready-to-Inoculate Grow Bags
Take the hassle out of growing mushrooms with Out-Grow’s BRF Mushroom Substrate Bags! Designed for both beginners and experienced cultivators, these sterilized grow bags offer a superior alternative to traditional PF Tek jars. Each bag contains 8 ounces of high-quality brown rice flour substrate, enriched with vermiculite and gypsum for optimal mycelium colonization and fruiting.
Why Choose Our BRF Mushroom Substrate Bags?
✔ 100% Sterilized & Ready to Use – No extra preparation needed.
✔ More Substrate, Bigger Yields – Get more volume compared to standard half-pint jars.
✔ Easy Inoculation – Simply inject 2-4 cc of spore solution or 5-8 cc of liquid culture and watch your mushrooms grow.
✔ Versatile Fruiting Options – Grow directly in the bag or transfer to a fruiting chamber.
✔ Great for Bulk Grows – Can be used as spawn for a bulk substrate mix.
These mushroom grow bags are designed to accelerate colonization and support strong, healthy fruiting bodies. Whether you're a beginner looking for an easy start or an advanced grower scaling up production, these BRF substrate bags provide the perfect foundation for a successful harvest.
Start growing today with Out-Grow’s premium mushroom substrate grow bags—your go-to choice for reliable, high-yield cultivation!