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  • Sterilized Oak & Soy Hull Mushroom Substrate (Multiple Quantities)

Sterilized Oak & Soy Hull Mushroom Substrate (Multiple Quantities)

Grow Supplies

Price range: $32.99 through $118.00

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

Pre-sterilized, perfectly hydrated oak and soy hull substrate, ready for your liquid culture, sawdust, or grain spawn. Beginner-friendly and contamination-free. Choose your quantity.
Clear
Buy with
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

Quantity

Single Pack, 2 Pack, 4 pack

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

4.6
★★★★★
Based on 19 reviews
5 ★ 63%
4 ★ 37%
3 ★ 0%
2 ★ 0%
1 ★ 0%
★★★★★
August 14, 2025

Really happy with this. Would order again without hesitation!

DH
David H.
Verified
★★★★★
April 24, 2025

Fantastic quality and fast shipping. No complaints at all.

SR
Sophia R.
★★★★★
August 7, 2026

Fantastic quality and fast shipping. No complaints at all.

GW
Grace W.
Verified

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