---
product_id: 740498081
title: "Gypsum Powder for Mushroom Substrate (1 lb) | Lab Grade | Packed in a HEPA-Filtered Facility | Highly Soluble for Growing Mushrooms | Ultra-Fine | Soil Conditioner | (Calcium Sulfate Dihydrate)"
brand: "mushroom merchant"
price: "KD 11.54"
currency: KWD
in_stock: true
reviews_count: 5
category: "Mushroom Merchant"
url: https://www.desertcart.com.kw/products/740498081-gypsum-powder-for-mushroom-substrate-1-lb-lab-grade-packed
store_origin: KW
region: Kuwait
---

# ultra-fine, highly soluble powder 97% pure calcium sulfate HEPA-filtered contamination-free Gypsum Powder for Mushroom Substrate (1 lb) | Lab Grade | Packed in a HEPA-Filtered Facility | Highly Soluble for Growing Mushrooms | Ultra-Fine | Soil Conditioner | (Calcium Sulfate Dihydrate)

**Brand:** mushroom merchant
**Price:** KD 11.54
**Availability:** ✅ In Stock

## Summary

> 🍄 Elevate your grow game with lab-grade gypsum perfection!

## Quick Answers

- **What is this?** Gypsum Powder for Mushroom Substrate (1 lb) | Lab Grade | Packed in a HEPA-Filtered Facility | Highly Soluble for Growing Mushrooms | Ultra-Fine | Soil Conditioner | (Calcium Sulfate Dihydrate) by mushroom merchant
- **How much does it cost?** KD 11.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/740498081-gypsum-powder-for-mushroom-substrate-1-lb-lab-grade-packed)

## Best For

- mushroom merchant enthusiasts

## Why This Product

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

## Key Features

- • **Made in the USA:** Proudly mined, refined, and packed domestically for trusted quality
- • **Ultra-Fine & Soluble:** Dissolves quickly for effortless mixing and even nutrient distribution
- • **Affordable Excellence:** Premium lab-grade gypsum without breaking your budget
- • **Mycology-Grade Purity:** 97% calcium sulfate dihydrate ensures optimal mycelium growth
- • **Contamination-Free Packaging:** Packed in a HEPA-filtered facility for pristine substrate quality

## Overview

This 1 lb pack of ultra-fine, 97% pure calcium sulfate dihydrate gypsum powder is specially formulated for mushroom substrate and soil conditioning. Packaged in a HEPA-filtered facility in the USA, it guarantees contamination-free, highly soluble gypsum that promotes vigorous mycelium growth and improved soil structure—perfect for both professional mycologists and passionate growers seeking superior cultivation results.

## Description

Gypsum for mushroom substrate and soil. One pound of gypsum powder for growing mushrooms and for the garden. Gypsum (calcium sulfate dihydrate) is used to improve soil structure, make nutrients available, and much more. Packaged in a HEPA filtered facility, and is 97% pure. Designed to support vigorous mycelium growth, our gypsum powder ensures an optimal growing environment, fostering the development of abundant, healthy fruiting bodies. Whether you're a seasoned mycologist or a beginner enthusiast, our product is the key to successful mushroom cultivation projects. Unlock the full potential of your mushroom cultivation and gardening endeavors with our premium Gypsum for Mushroom Substrate and Soil. Each pound of our meticulously crafted gypsum powder is your key to vibrant mushrooms and flourishing plants. Gypsum, also known as calcium sulfate dihydrate, isn't just a soil amendment – it's a game-changer for your garden. Improve soil structure, make essential nutrients readily available to your plants, and unlock their growth potential with ease. Perfect for indoor and outdoor growing. Superior quality equals superior results. Our gypsum at 97% purity. Whether you're a seasoned mushroom grower or a budding green thumb, our gypsum is the perfect addition to your toolkit. Designed specifically for mushrooms and plants, our product is a must-have for any serious cultivator.

Review: Hi quality
Review: The powder dissolves well in water. I've only used a couple tablespoons so far but it's worked great. My mushrooms have grown well with it. A good value for the price.

## Features

- [Mycology Grade] - Made with the mushroom grower in mind. Packaged in a HEPA filtered facility by experienced mycologists. This ensures no contaminants will enter your grow area.
- [High Purity] - 97% calcium sulfate dihydrate. Ultra fine and highly soluble in water, making it easy to mix.
- [Affordable Quality] - Quality you can trust at a price that doesn't break the bank. Every day, we strive to provide the most value to our customers.
- [100% USA Made] - Mined, refined, and packed proudly in the USA. Our goal is to make your growing experience easy and enjoyable.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D3V95WWZ |
| Manufacturer reference | GYP1LBV1 |
| Product Dimensions | 22.86 x 15.24 x 6.35 cm; 453.59 g |

## Product Details

- **Brand:** Mushroom Merchant
- **Item form:** Powder
- **Item weight:** 454 g
- **Liquid volume:** 16 Fluid Ounces
- **Specific uses for product:** Mushroom Cultivation, Gardening

## Images

![Gypsum Powder for Mushroom Substrate (1 lb) | Lab Grade | Packed in a HEPA-Filtered Facility | Highly Soluble for Growing Mushrooms | Ultra-Fine | Soil Conditioner | (Calcium Sulfate Dihydrate) - Image 1](https://m.media-amazon.com/images/I/71tW5iN-YFL.jpg)

## Available Options

This product comes in different **Item Weight** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***A on 24 October 2025*

Hi quality

### ⭐⭐⭐⭐⭐ Review
*by A***N on 8 March 2026*

The powder dissolves well in water. I've only used a couple tablespoons so far but it's worked great. My mushrooms have grown well with it. A good value for the price.

### ⭐⭐⭐⭐⭐ Review
*by T***R on 10 June 2025*

Works good.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.kw/products/740498081-gypsum-powder-for-mushroom-substrate-1-lb-lab-grade-packed](https://www.desertcart.com.kw/products/740498081-gypsum-powder-for-mushroom-substrate-1-lb-lab-grade-packed)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-12*