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Sterilized Grain Spawn — 6 lb

Grain Spawn

$29.99

In stock · Free shipping on orders over $75 · Live arrival guaranteed

Large-batch sterilized grain bag. Unicorn 3T filter patch + injection port. Ideal for bulk inoculation runs.
Or 4 interest-free payments. Ships from Longmont, CO.
Live arrival guarantee

Arrives healthy or we replace it free

Lab-tested clean

Every lot checked for contamination

Fast nationwide shipping

Free over $75 · 1–2 day handling

Colorado small-batch

Grown with care, never at scale

What's included & how it works

Each kit arrives as a fully-colonized block ready to fruit — no sterile technique, no extra gear.

  • Cut the marked window and mist 2–3× daily
  • First pins appear in days; harvest in 1–2 weeks
  • Re-mist for a second and third flush
  • Includes step-by-step printed instructions + a link to our video guide

Additional information

Weight 7 lbs

We ship Monday–Wednesday to keep your order moving over the weekend. Orders over $75 ship free. If your living product arrives unhealthy, send us a photo within 48 hours and we’ll replace it free — no questions asked.

Verified reviews

What growers are
saying

Share your experience

5.0
★★★★★
Based on 18 reviews
5 ★ 100%
4 ★ 0%
3 ★ 0%
2 ★ 0%
1 ★ 0%
★★★★★
September 1, 2025

This is a keeper. Quality feels premium and long-lasting.

SV
Sophia V.
Verified
★★★★★
May 16, 2026

Love it. Does exactly what it says and feels well made.

DK
Diana K.
★★★★★
October 16, 2025

Really happy with this. Would order again without hesitation.

EW
Eric W.
Verified

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