
Available in 3 & 5 LBS
Boost your mushroom cultivation with Mycelium’s sterile whole oats grain spawn bags, available in both 3 lb and 5 lb sizes. Whole oats offer a dense, moisture-retentive grain structure that supports even colonization and sustained nutrient delivery. Rich in complex carbohydrates, fiber, and proteins, they provide an ideal environment for robust mycelial growth and extended fruiting potential. Each bag is fully sterilized and includes a self-healing injection port and a 0.2-micron filter patch for safe, easy inoculation and optimal airflow. Compatible with a wide range of gourmet and medicinal mushroom strains. (Liquid culture sold separately.)
Why you'll love it
Moisture-Retentive for Even Growth
Whole oats retain moisture effectively, promoting consistent colonization and long-lasting hydration for sustained mycelial development.
Nutrient-Dense Substrate
Packed with complex carbs, fiber, and protein, whole oats deliver slow-release nutrients ideal for strong mycelial expansion and multiple flushes.
Sterile & Easy Inoculation
Pre-sterilized and ready to use with a self-healing injection port, these bags make inoculation simple and reduce contamination risks.
Contamination-Proof Design
The 0.2-micron filter patch provides essential gas exchange while keeping harmful contaminants out, supporting healthy mycelial growth.
Sized for Every Grower
Offered in 3 lb and 5 lb sizes, these grain bags are perfect for cultivators managing everything from small home projects to larger operations.
Boost your mushroom cultivation with Mycelium’s sterile whole oats grain spawn bags, available in both 3 lb and 5 lb sizes. Whole oats offer a dense, moisture-retentive grain structure that supports even colonization and sustained nutrient delivery. Rich in complex carbohydrates, fiber, and proteins, they provide an ideal environment for robust mycelial growth and extended fruiting potential. Each bag is fully sterilized and includes a self-healing injection port and a 0.2-micron filter patch for safe, easy inoculation and optimal airflow. Compatible with a wide range of gourmet and medicinal mushroom strains. (Liquid culture sold separately.)
Why you'll love it
Moisture-Retentive for Even Growth
Whole oats retain moisture effectively, promoting consistent colonization and long-lasting hydration for sustained mycelial development.
Nutrient-Dense Substrate
Packed with complex carbs, fiber, and protein, whole oats deliver slow-release nutrients ideal for strong mycelial expansion and multiple flushes.
Sterile & Easy Inoculation
Pre-sterilized and ready to use with a self-healing injection port, these bags make inoculation simple and reduce contamination risks.
Contamination-Proof Design
The 0.2-micron filter patch provides essential gas exchange while keeping harmful contaminants out, supporting healthy mycelial growth.
Sized for Every Grower
Offered in 3 lb and 5 lb sizes, these grain bags are perfect for cultivators managing everything from small home projects to larger operations.
Product details & instructions
Fungi our formula was made for
A curated lineup of premium species that thrive on this hardwood substrate blend
