New
In stock
Mushrealm 2.5lb Grain Spawn Bag
$15.00
Sterilized fresh to order · ships Fri Jul 3 · arrives Mon Jul 6–Wed Jul 8
This batchBatch #B2627
- ✓15 PSI
- ✓121°C
- ✓90 min
- ✓dry cycle
Ships fresh from this run within 2 business days · next sterilization Tuesday
2.5 lb of lab-clean, sterilized grain in a filter-patch bag with a self-healing injection port — ready to inoculate and expand into bulk substrate.
Fast US shipping: Flat $9.99 — dispatched within 2 business days.
Estimated delivery: 3–5 business days anywhere in the USA.
New customer? Save 10% with code FIRSTGROW.
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Description
Description
Our Grain Spawn Bags are packed with premium, fully-hydrated grain, pressure-sterilized and sealed with a 0.2-micron filter patch for clean gas exchange. The self-healing injection port lets you inoculate with liquid culture or a spore syringe without introducing contamination. Once fully colonized, break and mix into your Mushrealm bulk substrate to maximise yields. Ships within the USA within 2 business days.
Additional information
Additional information
| Weight | 2.5 lbs |
|---|
Size & scale
~10 in tall · holds 2.5 lb sterilized grain (~1.1 L)
Plan your grow
Colonizes in—
First harvest—
Spawns—into bulk substrate
Tracked US shipping — dispatched within 2 business days
30-day damage-replacement guarantee
How to run this bag
1Inoculate
Wipe the port with alcohol, then inject liquid culture or a spore syringe.
2Colonize
65–75°F in the dark. Shake gently at ~30% colonized to speed it up — fully colonized in about 2 weeks.
3Spawn to bulk
Break up the colonized grain and mix it into your Mushrealm bulk substrate at roughly 1:2–1:4.
4Fruit & harvest
Let the substrate colonize, then introduce fruiting conditions and harvest 2–3 flushes.


