MushroomSupplies Sterilized Mushroom Grain Bag

Sterilized Millet Blend

Each MushroomSupplies grain bag contains a proprietary blend of perfectly hydrated sterilized millet and hardwood oak sawdust for extremely fast colonization and maximized yields.

Easy to Use

Perfect for inoculation via spore injection, grain-to-grain, or by adding agar directly to the bag. Works great for at-home hobbyists and large-scale cultivators.

Lab-Quality Grow Bag + Injection Port

The lab-quality mushroom grow bag has a 0.2 micron filter, allowing for the perfect air exchange without risk of contamination.

Medicinal and Gourmet Mushrooms

Perfect for a wide-variety of medicinal and gourmet mushrooms. This special blend provides the nutrients mycelium need to thrive!

Mix 5 LBS of MushroomSupplies substrate for every 3 LBS of colonized grain for growing dung-loving mushrooms. 

For Gourmet Edible and Functional Mushrooms, use at least .5 Lbs of grain per 5 Lbs of Substrate (~10-15% Spawn to Substrate Ratio).

1. Inoculate grain bag with liquid culture syringe
2. Store for a few weeks to fully colonize the bag of grain with mushroom mycelium.
3. Mix colonized grain and substrate in a monotub or grow bag.
4. Store until mixture is fully colonized.
5. Allow for air flow in your chosen environment.
6. Harvest mushrooms once they fruit.