3 lb Sterilized Grain Bag

Injectable Grain Spawn Bag

Kickstart your mushroom growing journey with our premium Injectable Grain Bag — the perfect sterile medium for propagating mushroom spores or liquid culture. Each bag is filled with high-quality, hydrated grain (typically millet, rye, milo or wheat berries) and pressure-sterilized to ensure a contaminant-free environment, giving your mycelium the best possible start.

A built-in self-healing injection port allows for easy inoculation with a spore syringe or liquid culture—no glovebox or lab setup required. The integrated 5 micron filter patch provides ideal gas exchange while maintaining sterility throughout colonization.

Whether you’re growing gourmet, medicinal, or exotic mushrooms, this bag is the essential first step for cultivating healthy, vigorous mycelium.

Features:

• Pre-sterilized, hydrated grain (ready to inoculate)

• Self-healing injection port for easy, mess-free use

• High-efficiency filter patch for clean airflow

• Compatible with most mushroom species

• Ideal for indoor cultivation and spawn production

Just inject, incubate, and watch your mycelium thrive.