---
product_id: 403797369
title: "Dry Substrate Mix"
brand: "surfin' spores"
price: "$U4195"
currency: UYU
in_stock: null
reviews_count: 9
category: "Surfin' Spores"
url: https://www.desertcart.uy/products/403797369-dry-substrate-mix
store_origin: UY
region: Uruguay
---

# Balanced nutrient distribution Optimal moisture retention Easy water-only prep Dry Substrate Mix

**Brand:** surfin' spores
**Price:** $U4195
**Availability:** ❌ Out of Stock

## Summary

> 🍄 Cultivate like a pro—fresh substrate, flawless growth, epic harvests!

## Quick Answers

- **What is this?** Dry Substrate Mix by surfin' spores
- **How much does it cost?** $U4195 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/403797369-dry-substrate-mix)

## Best For

- surfin' spores enthusiasts

## Why This Product

- Trusted surfin' spores brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Just add water and follow simple steps to create 10 lbs of pasteurized growing medium.
- • **Freshness On Demand:** Activate premium substrate only when you need it—no waste, max potency.
- • **Maximize Your Harvest:** Specially formulated to boost multiple flushes and deliver professional-grade yields.
- • **Precision-Engineered Blend:** Expert mix of coco coir, vermiculite & gypsum for unbeatable mycelial growth.
- • **Versatile Cultivation Ready:** Perfectly compatible with monotubs, grow bags, and all your favorite grow methods.

## Overview

Surfin' Spores Dry CVG Mushroom Substrate is a premium, dry bulk mix of coco coir, vermiculite, and gypsum designed for serious cultivators. It stays fresh until hydrated, yielding 10 lbs of pasteurized substrate ideal for monotubs and grow bags. Engineered for optimal moisture, nutrient balance, and easy preparation, it supports robust mycelial growth and maximizes mushroom yields across multiple flushes.

## Description

desertcart.com : Surfin' Spores CVG Mushroom Substrate | Dry Bulk Substrate for Mushroom Growing | Makes 10 lbs of Pasteurized Substrate | Perfect for Monotub Grows | Coco Coir, Vermiculite, Gypsum : Patio, Lawn & Garden

Review: Nice kit, directions have you add too much water though. - This is a great, convenient kit, the only issue is that the amount of water is WAY too much. I had to wring out the substrate prior to putting in the tub.
Review: Great substrate mix - Mix is clean and free of contamination. Holds moisture very well. Mix is easy to make and can be use in grow bags and tubs. Can be used for different types of mushrooms. Mushroom grow really well in the mix. Can be used in different size grow bags and tubs. Mix can have extra things added like compost, ashes, straw, sawdust and others. I would buy this mix again.

## Features

- Fresh On Demand: Create substrate when needed; our dry CVG mushroom substrate stays fresh until you're ready to use it; just add water to prepare ten pounds of premium mushroom soil, perfect for serious cultivators seeking maximum freshness
- Premium Blend Formula: Expertly calibrated mix of coco coir, vermiculite, and gypsum; our CVG substrate creates the ideal environment for robust mycelial growth, balanced moisture retention and nutrient distribution for optimal mushroom growing
- Easy Preparation Process: Simple to prepare with just water and basic equipment; our bulk substrate for mushrooms transforms into ten pounds of pasteurized growing medium, comprehensive instructions included for foolproof results
- Versatile Growing Medium: Compatible with monotubs, grow bags, and other cultivation methods; our mushroom substrate works with various techniques, perfect addition to your mushroom growing supplies for consistent, reliable results
- Superior Yield Potential: Specially formulated substrate enhances mushroom production; the ideal moisture balance and nutrient profile in our CVG substrate promotes multiple abundant flushes, maximize your harvest with professional-grade quality

## Product Details

- **Brand:** Surfin' Spores
- **Style:** Functional Mushroom Cultivation
- **Item Weight:** 51.17 Ounces

## Images

![Dry Substrate Mix - Image 1](https://m.media-amazon.com/images/I/91MOJDd+avL.jpg)
![Dry Substrate Mix - Image 2](https://m.media-amazon.com/images/I/81lVPxce4nL.jpg)
![Dry Substrate Mix - Image 3](https://m.media-amazon.com/images/I/81-ChcaNXgL.jpg)
![Dry Substrate Mix - Image 4](https://m.media-amazon.com/images/I/81qkG-rm5FL.jpg)
![Dry Substrate Mix - Image 5](https://m.media-amazon.com/images/I/81H4e2UQ75L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Is this suitable enough to use as the actual grow medium?  Would I still need the substrate (rye berry, etc)**
A: You will need to combine this with colonized grain spawn. It will not support colonization on its own.

**Q: What types of mushrooms grow best with this mix?**
A: Dung loving varieties

**Q: What would the mixing measurements for a small batch?.. Say ..only needing a lb or 2 at a time..**
A: I read that you can make a full batch and leave it for up to 6 months before using it all, so if you're going to be growing more batches in the near future, I'd probably just make the whole thing.  Otherwise, you can measure out 1/5 of each of the three ingredients.  The gypsum is the hardest to measure, but nothing needs to be exact, so I wouldn't worry too much.  The big thing is to start with much less water than they say, like 12-14 cups.  Now, they might be telling you that so you have enough boiling water to more thoroughly pasteurize the substrate, but if you use that much, you'll have to use a colander and/or manual squeezing and draining to get rid of the excess moisture.  If you don't know what "Field Capacity" means, you need to do more research!

**Q: How do I use this with a 32oz jar of colonized substrate?**
A: Boil water.... Drop all that stuff into a bucket or large pot an stir it up, add the heated water, seal it (i used plastic wrap ....but if you have a bucket with a lid use that) let sit for hours till its cool or at leased a little warm // ....now your ready to break out the monotub etc. Youtube 'Monotub and substrate'

P.s. dont use as much water as this pack says....mine had Way to much water, had to squeeze it out by hand, still to much....

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice kit, directions have you add too much water though.
*by D***S on January 16, 2026*

This is a great, convenient kit, the only issue is that the amount of water is WAY too much. I had to wring out the substrate prior to putting in the tub.

### ⭐⭐⭐⭐⭐ Great substrate mix
*by K***H on December 11, 2025*

Mix is clean and free of contamination. Holds moisture very well. Mix is easy to make and can be use in grow bags and tubs. Can be used for different types of mushrooms. Mushroom grow really well in the mix. Can be used in different size grow bags and tubs. Mix can have extra things added like compost, ashes, straw, sawdust and others. I would buy this mix again.

### ⭐⭐⭐⭐⭐ Mold free!
*by R***N on February 2, 2026*

No mold growth but my spores were bad and did not populate. Will try again.

## Frequently Bought Together

- Surfin' Spores Dry Mushroom Substrate Mix | Produces 10 Pounds of Pasteurized Bulk Substrate | CVG Blend (Coco Coir, Vermiculite, Gypsum)
- Boomer Shroomer Inflatable Monotub Kit, Mushroom Growing Kit Includes a Drain Port, Plugs & Filters, Removeable Liner [Patent No: US 11,871,706 B2]
- 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 Uruguay*
*Store origin: UY*
*Last updated: 2026-03-12*