---
product_id: 664482762
title: "Gypsum Powder for Mushroom Substrate (1 lb), Lab Grade, Garden Soil Amendment (Calcium Sulfate Dihydrate), Packaged in HEPA Enclosure"
brand: "olympus myco"
price: "30732 Ft"
currency: HUF
in_stock: true
reviews_count: 5
category: "Olympus Myco"
url: https://www.desertcart.hu/products/664482762-gypsum-powder-for-mushroom-substrate-1-lb-lab-grade-garden
store_origin: HU
region: Hungary
---

# 97%-99% purity for optimal nutrient delivery Enhances water retention & moisture balance Prevents soil compaction, boosts airflow Gypsum Powder for Mushroom Substrate (1 lb), Lab Grade, Garden Soil Amendment (Calcium Sulfate Dihydrate), Packaged in HEPA Enclosure

**Brand:** olympus myco
**Price:** 30732 Ft
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your grow game with pure, powerful gypsum—because your mushrooms deserve the best!

## Quick Answers

- **What is this?** Gypsum Powder for Mushroom Substrate (1 lb), Lab Grade, Garden Soil Amendment (Calcium Sulfate Dihydrate), Packaged in HEPA Enclosure by olympus myco
- **How much does it cost?** 30732 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/664482762-gypsum-powder-for-mushroom-substrate-1-lb-lab-grade-garden)

## Best For

- olympus myco enthusiasts

## Why This Product

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

## Key Features

- • **Airflow Amplifier:** Loosens soil structure to prevent compaction, promoting oxygen flow for stronger roots and healthier mycelium.
- • **Hydration Harmony:** Balances moisture perfectly to keep your soil hydrated without sogginess—ideal for mushrooms and plants alike.
- • **Premium Purity Power:** Lab-grade gypsum with 97%-99% calcium sulfate dihydrate ensures your substrate gets the purest boost for vibrant growth.
- • **Growth Nutrient Boost:** Delivers essential calcium and sulfur, fueling robust plant and mushroom development with balanced pH support.
- • **Clean & Controlled Packaging:** Packaged in a HEPA enclosure to guarantee contaminant-free powder, perfect for precision gardening and mycology pros.

## Overview

Olympus Myco Gypsum Powder is a lab-grade, high-purity calcium sulfate dihydrate soil amendment designed to improve substrate structure, enhance water retention, and boost plant and mushroom growth. Packaged in a HEPA enclosure for contamination-free use, it prevents soil compaction and supports healthier root and mycelium development, making it an essential addition for serious gardeners and mushroom cultivators.

## Description

Product Description Olympus Myco premium-grade gypsum powder is a vital ingredient in creating the ideal substrate for mushroom cultivation. It is also a rich source of calcium and sulfur, which are essential nutrients for healthy mushroom growth. Additionally, our gypsum powder improves water retention, regulates moisture levels, and prevents clumping, resulting in better air circulation. Our solution grade gypsum is a high-purity form of gypsum that is finely ground and designed to quickly dissolve in water. It is an ideal soil amendment that can improve soil structure, reduce soil erosion, and supply essential nutrients such as calcium and sulfur to plants and mushrooms. In addition, solution grade gypsum can be used in industrial processes as a source of calcium and sulfur. Whether you're a beginner or an experienced mushroom cultivator, our gypsum powder is an essential component of your mushroom growing kit, helping to promote robust and healthy mushrooms. Safety Warning Use with care. Avoid inhalation and contact with eyes and skin. Do not ingest. Use with gloves and protective mask. Keep out of reach of children and pets. Do not use on edible crops without dilution and proper precautions.

Review: I recently started using gypsum powder in my garden, and I'm pretty impressed. It's way cheaper than other soil amendments I've tried. I noticed a real difference in my plants' growth, especially my tomatoes. They seem healthier and more productive. The powder is easy to mix into the soil, and it doesn't have a strong smell. Plus, it's a natural product, so I feel good about using it. I'd definitely recommend giving it a try if you're looking to improve your soil.
Review: Food grade gypsum I use in my CVG mixture. Nice size bag, excellent for water retention in mycology. Easy to use, and pest free

## Features

- Improves Soil & Substrate Structure: Prevents compaction and enhances air circulation for healthier roots and mushroom mycelium. Ideal for gardens, lawns, and grow operations.
- Boosts Plant and Mushroom Growth: High-purity gypsum for gardening delivers essential calcium and sulfur while maintaining a balanced pH for vibrant, thriving plants.
- Enhances Water Retention: Promotes even moisture distribution, helping soil and substrate stay hydrated without becoming oversaturated or soggy.
- Reduces Clumping & Improves Texture: Our garden gypsum loosens soil and substrate for better airflow, stronger root development, and healthier mushroom cultivation.
- Solution-Grade Purity (97%-99%): Premium gypsum soil amendment rich in calcium sulfate dihydrate to improve soil structure, reduce erosion, and support robust growth.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C5K2SSP1 |
| Best Sellers Rank | 170,143 in Garden ( See Top 100 in Garden ) 2,564 in Garden Fertilisers |
| Customer Reviews | 4.8 4.8 out of 5 stars (525) |
| Date First Available | 17 May 2024 |
| Item model number | 1 lb |
| Item volume | 1 Litres |
| Manufacturer | Olympus Myco |
| Package Dimensions | 21.89 x 15.29 x 5.99 cm; 453.59 g |
| Part number | OM-GYPSUM1LB |

## Product Details

- **Brand:** Olympus Myco
- **Item weight:** 454 g
- **Style:** Industrial
- **UPC:** 810102551542

## Images

![Gypsum Powder for Mushroom Substrate (1 lb), Lab Grade, Garden Soil Amendment (Calcium Sulfate Dihydrate), Packaged in HEPA Enclosure - Image 1](https://m.media-amazon.com/images/I/71jCl3PWjjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***Y on 5 May 2025*

I recently started using gypsum powder in my garden, and I'm pretty impressed. It's way cheaper than other soil amendments I've tried. I noticed a real difference in my plants' growth, especially my tomatoes. They seem healthier and more productive. The powder is easy to mix into the soil, and it doesn't have a strong smell. Plus, it's a natural product, so I feel good about using it. I'd definitely recommend giving it a try if you're looking to improve your soil.

### ⭐⭐⭐⭐⭐ Review
*by A***N on 10 October 2025*

Food grade gypsum I use in my CVG mixture. Nice size bag, excellent for water retention in mycology. Easy to use, and pest free

### ⭐⭐⭐⭐⭐ Review
*by E***T on 4 January 2026*

GREAT!

## Frequently Bought Together

- Olympus Myco 97% Pure Gypsum Powder, 1 lb – High Solubility Calcium Sulfate Dihydrate for Soil, Gardens, Lawns, and Mushroom Substrate
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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-09*