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4.5 (123)

5 Pounds Pastureized Custom Blend Substrate

Name: STM 5 Pounds Pastureized Custom Blend Substrate - 5 Pounds Pastureized Custom Blend Substrate
Brand: STM
SKU: 37191398523044
Price: 35.0 USD
Availability: InStock
Rating: 5 (13 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$35.00

Quantity

Color

Black

Quantity

5 pound myco bag of pasteurized custom blend substrate (Morning Star Myco Royal Feast vermiculite, coco coir, gypsum.)
1 STM Sticker

Email for bulk orders.

Reviews

5.0

13 ratings

great success

i have struggled with different pasteurization techniques but i have found great success with STM. It is not only one less vector in contamination prevention but also promotes strong flushes, in my experience.

Ferdinand · May 15, 2026

Great quality

Quick easy and high quality.

Matt · May 10, 2026

A+ Substrate

Showed up perfectly hydrated and pasteurized. Performed just like in the movies. Don’t go anywhere else. STM stands behind their products no matter what.

Bucky · December 26, 2025