Grow Supplies
Sterilized Grain Spawn Bags — 4-Pack
Four 6lb sterile millet & sawdust grain spawn bags at a lower per-bag price — ideal for growers running multiple inoculations or scaling up between single bags and full pallet orders.
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Switch sizes without leaving the page- • USDA Organic Certified · grown on our 70-acre Pennsylvania farm
- • Hand-packed for freshness · grower support included with every order
Our 4-Pack of Sterilized Grain Spawn Bags gives growers running multiple inoculations a lower per-bag price without committing to a full pallet. Each 6 lb bag is made with the same balanced blend of millet and sawdust, pre-sterilized and hydrated to the ideal moisture ratio to support vigorous mycelial expansion — no injection port, so simply open each bag from the top for direct inoculation.
Consistency matters when you're running several grows at once, and every bag in this 4-pack is sealed in front of flow hoods, wiped with hospital-grade sterilizers, and stretch-wrapped to the same standard as our single bags — so you're scaling up without sacrificing reliability from bag to bag.
Optimized for use in clean environments between 70–78°F, this grain substrate supports a wide variety of mushroom species, delivering fast colonization and vigorous growth. A practical middle step for growers moving from a single test bag toward larger production.
Need more? Check out our Pallet option for bulk and wholesale pricing.
