---
product_id: 541857942
title: "Boomer Shroomer Dry Bulk Substrate for Mushroom Cultivation (Coco Coir, Vermiculite, Gypsum) | Produces 10 Pounds of Pasteurized Substrate, Enough for Two Inflatable Monotub"
brand: "boomer shroomer"
price: "KSh25258"
currency: KES
in_stock: true
reviews_count: 5
category: "Boomer Shroomer"
url: https://www.desertcart.co.ke/products/541857942-boomer-shroomer-dry-bulk-substrate-for-mushroom-cultivation-coco-coir
store_origin: KE
region: Kenya
---

# 1100g premium substrate blend Enough for 2 inflatable monotubs 16 cups boiling water pasteurization Boomer Shroomer Dry Bulk Substrate for Mushroom Cultivation (Coco Coir, Vermiculite, Gypsum) | Produces 10 Pounds of Pasteurized Substrate, Enough for Two Inflatable Monotub

**Brand:** boomer shroomer
**Price:** KSh25258
**Availability:** ✅ In Stock

## Summary

> 🍄 Cultivate your own magic—grow like a pro with Boomer Shroomer!

## Quick Answers

- **What is this?** Boomer Shroomer Dry Bulk Substrate for Mushroom Cultivation (Coco Coir, Vermiculite, Gypsum) | Produces 10 Pounds of Pasteurized Substrate, Enough for Two Inflatable Monotub by boomer shroomer
- **How much does it cost?** KSh25258 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/541857942-boomer-shroomer-dry-bulk-substrate-for-mushroom-cultivation-coco-coir)

## Best For

- boomer shroomer enthusiasts

## Why This Product

- Trusted boomer shroomer brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Generous Yield:** Produces ~9-10 pounds of substrate, fueling two full monotub grows
- • **Trusted by Growers:** 4.6-star rating with 247 reviews—join the thriving mushroom cultivation community
- • **Effortless Pasteurization:** Just add boiling water and wait 24 hours—no complicated steps
- • **Perfectly Balanced Moisture:** Formulated for ideal field capacity to maximize colonization success
- • **Ready-to-Activate Bulk Blend:** 500g Coco Coir + 500g Vermiculite + 100g Gypsum for optimal mushroom growth

## Overview

Boomer Shroomer Dry Bulk Substrate combines 500g Coco Coir, 500g Vermiculite, and 100g Gypsum to create approximately 10 pounds of pasteurized substrate. Designed for easy home preparation with just boiling water, it yields enough substrate for two inflatable monotubs, ensuring a high-quality, balanced medium for successful mushroom cultivation.

## Description

Product description These dry ingredients are to make one batch of bulk substrate for your home grown mushroom grow (Step 3 on the Boomer Shroomer Beginner Mushroom Guide). All you need is a 5 gallon bucket with a lid and 16 cups of boiling water. Included is 500 grams of Coco Coir, 500 grams of Vermiculite, and 100 grams of Gypsum. Bulk Substrate Ingredients: 500 grams Coco Coir 500 grams Vermiculite 100 grams of Gypsum Needed At Home: 16 Cups Boiling Water 5-gallon bucket with lid First add the coco coir, vermiculite and gypsum to the 5-gallon bucket. Next, boil 16 cups of water. Once the water come to a complete boil, carefully pour into the 5-gallon bucket and then close the lid. Let it sit to pasteurize. After approximately 24 hours it is ready to use. Ideally keep insulated to aid the pasteurization process. Once it has cooled down, double check to make sure it is at field capacity and mix in with your colonized grain spawn. Safety Warning Note: Please use hand protection devices when adding boiling water. Avoid inhaling the ingredients.

Review: I love Boomer Shroomer! Always on point!
Review: This is an excellent substrate that 100% works. Sanitize and Sanitize again! :)

## Features

- Bulk Substrate Ingredients: 500 grams Coco Coir, 500 grams Vermiculite, and 100 grams of Gypsum
- Just add 16 cups of boiling water and let pasteurize overnight.
- Makes around 9 pounds of bulk substrate. Makes enough for two Boomer Shroomer Inflatable Monotubs.
- Any questions or concerns please contact Ashley at ashley@boomershroomer.com

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C21QDHXX |
| Best Sellers Rank | 292,352 in Garden ( See Top 100 in Garden ) 2,063 in Gardening Soils |
| Brand | Boomer Shroomer |
| Brand Name | Boomer Shroomer |
| Customer Reviews | 4.6 out of 5 stars 247 Reviews |
| Global Trade Identification Number | 00196852195749 |
| Item Type Name | Bulk Substrate |
| Manufacturer | Boomer Shroomer |
| Style | Coco Coir , Vermiculite |
| Style Name | Coco Coir,Vermiculite |
| UPC | 196852195749 |
| Unit Count | 4731.76 millilitre(s) |
| Volume | 5 Gallons |

## Product Details

- **Brand:** Boomer Shroomer
- **Global Trade Identification Number:** 00196852195749
- **Style:** Coco Coir,Vermiculite
- **UPC:** 196852195749

## Images

![Boomer Shroomer Dry Bulk Substrate for Mushroom Cultivation (Coco Coir, Vermiculite, Gypsum) | Produces 10 Pounds of Pasteurized Substrate, Enough for Two Inflatable Monotub - Image 1](https://m.media-amazon.com/images/I/71-0PHHRPPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ I love Boomer Shroomer! Always on point!
*by J***C on 13 January 2026*



### ⭐⭐⭐⭐⭐ This is an excellent substrate that 100% works. Sanitize and Sanitize again! :)
*by M***N on 1 February 2025*



### ⭐⭐⭐⭐⭐ Easy to use, great product
*by R***B on 6 July 2025*



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- Myco Labs Premium 5-Grain Mushroom Spawn Bags | Sterilized Grain Spawn | Injection Ports | 2 Quarts Each Bag | 2 Bags per Box

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-11*