Pasteurized Substrate

C - V - G

Sterilized Substrate Bags

Balanced. Ready. Built for strong growth from start to finish.
Our substrate mix of coco coir, vermiculite, and azomite is fully hydrated, sterilized, and sealed for contamination-free performance. Perfect for spawning colonized grain or as a bulk grow base.

No guessing — just clean, pro-grade substrate for consistent yields.


Why growers love it

  • Balanced formula for strong and even colonization.
  • Ideal water retention for healthy fruiting conditions.
  • Sterilized and sealed for minimal contamination risk.

What’s inside

  • Substrate: Coco coir, premium vermiculite, and trace minerals (azomite).
  • Hardware: Durable, heat-sealed grow bag with 0.2 μm filter patch.
Usage (quick guide):
1. Open & Spawn: Add colonized grain spawn directly into the bag.
2. Mix: Shake gently to distribute evenly.
3. Incubate & Fruit: Let it colonize fully, then expose to fruiting conditions.

Quick Start

  1. Open & Spawn: Add colonized grain spawn directly into the bag.
  2. Mix: Shake gently to distribute evenly.
  3. Incubate & Fruit: Let it colonize fully, then expose to fruiting conditions.
You’ll also need: Colonized grain spawn, clean gloves, and alcohol wipes for sterile handling.
Pro tip: For best results, mix spawn evenly into the substrate to speed up colonization and reduce contamination risk.

Specs

  • Bag size: 3–5 liters
  • Shelf life: 3–4 weeks unopened
  • Fully sterilized and batch-tested

Product Highlights

  • Perfect water retention and aeration balance
  • Ready to use — no prep needed
  • Trusted by hobbyists and pros for consistent harvests

10.00 USD

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Reviews

Michael R.

Toronto ⭐⭐⭐⭐⭐

Tried growing mushrooms at home for the first time – and it worked perfectly! The bag is convenient, no need for sterilizing anything. Within a few weeks, I had fresh mushrooms

Jessica L.

Vancouver ⭐⭐⭐⭐⭐

Super easy for beginners. Just added the mycelium, kept it warm, and forgot about it – the mushrooms grew on their own. Tasty and hassle-free!

Daniel M.

Calgary ⭐⭐⭐⭐⭐

"I’ve tried other methods before, but this one is really the simplest. Great yield, the only downside is that I wish the bag was a bit bigger

Sophie K.

Montreal ⭐⭐⭐⭐⭐

A fun idea for the home! My kids and I grew mushrooms right in the kitchen, and it was so exciting to watch the bag turn white. The kids loved it!

Ryan D.

Ottawa ⭐⭐⭐⭐⭐

The harvest exceeded my expectations – I got more mushrooms from one bag than promised. And the taste is way better than store-bought

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