Reliable Substrate & Sterilized Grain for Every Grower
Small-batch, clean, and consistent materials you can trust — made by a real grower, not a factory.
Why Growers Choose Simple Substrate
Clean & Consistent
Every bag is sterilized in small batches for reliability you can count on.
Built by a Real Grower
Years of trial, learning, and testing go into every substrate and grain mix.
Trusted Results
Real growers have used our bags successfully — and we keep improving.
About Us
Simple Substrate was built by growers, for growers.
We make clean, consistent substrate and grain with no shortcuts—so you can focus on healthy growth and real results.
Strong foundations create strong grows.
How It Works
1 — Choose Your Bags
Select your grain, substrate, or starter kit.
2 — We Prep & Ship
Bags are sterilized, sealed, and shipped quickly.
3 — Grow With Confidence
Start your grow with reliable, clean materials.