Product Shot
Syringe & packaging
Oat Groat Sterile Grain Bag — 3lb
Quantity
What's in the bag
3lb Sterile Grain
0.2μm Filter Patch
Self-Healing Injection Port
Instruction Card
Viable culture guaranteed. If it arrives damaged, dead, or visibly contaminated, contact us within 48 hours with photos and we'll arrange a replacement or refund.
How we guarantee it arrives sterile
Autoclaved at 15 PSI
Real commercial-grade sterilization, not just pasteurized.
Batch-tested
Verified with biological indicators before shipping, not just pressure/temp logs.
0.2-micron filter patch
Lets air exchange through, blocks contaminants after sterilization.
Grain Bag Specs
Bag Size
3 lb — 10 × 6 × 6 in bag
Colonization
5–8 days once inoculated
Sterilization
Autoclaved 15 PSI / 100 min — verified per batch with biological indicators + temp/pressure logging
Moisture
~50% — hydrated and ready to inoculate
Recommended Inoculation
2.5–5cc liquid culture or 1–2cc spore solution
Shelf Life
4–6 months, stored cool and dark
Consistently the fastest-colonizing grain in side-by-side comparisons — oat groats are the top pick for aggressive Oyster strains that reward every day shaved off colonization time. Their loose hull structure lets mycelium establish and spread with less resistance than denser grains.
That same loose structure is why oats reward precision: over-hydrate and they turn mushy before colonization finishes; under-hydrate and growth stalls. Our bags ship pre-hydrated to the correct moisture target so you're starting from spec, not guessing — and every bag is sterilized in a commercial autoclave at 15 PSI, batch-tested with biological indicators before it ships.
Each bag: 3lb sterilized oat groats · 0.2-micron filter patch · self-healing injection port · shrooms instruction card. Store cool and dark until use.
