












🌿 Elevate your garden game with pure, powerful gypsum!
Olympus Myco 97% Pure Gypsum Powder is a high-solubility calcium sulfate dihydrate soil amendment designed to improve soil and substrate structure, enhance water retention, and provide essential calcium and sulfur nutrients. Ideal for gardens, lawns, and mushroom cultivation, this 1 lb pack offers premium purity and proven results, making it a top choice for professional and hobbyist growers alike.







| ASIN | B0C5K2SSP1 |
| Best Sellers Rank | #3,845 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #176 in Garden Fertilizers |
| Customer Reviews | 4.8 4.8 out of 5 stars (594) |
| Item Weight | 1 pounds |
| Item model number | 1 lb |
| Manufacturer | Olympus Myco |
| Package Dimensions | 8.62 x 6.02 x 2.36 inches |
B**Y
"Tomato" plants.
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.
A**N
Gypsum
Food grade gypsum I use in my CVG mixture. Nice size bag, excellent for water retention in mycology. Easy to use, and pest free
E**T
GREAT!
GREAT!
S**R
Good stuff
Works well
S**V
Great price
Works well for my gardening needs. Great price, will definitely be back fore more. This is my second time purchasing and I'll keep coming back.
P**S
Results Take Time
I’m using gypsum to break up clay soil, and it takes more than a few weeks to see results. Asking for a review at this time is inappropriate.
J**Q
Quality Product
It is pricey and most people wouldn't buy and use like I do. If I am going to go to all the work to eliminate heavy metal and other stuff. Why use mined gypsum.
D**.
Quality Gypsum Powder
This is high quality gypsum powder. It has a very fine texture and is easy to mix into soil. It doesn't have a funky smell or anything, so I have no complaints whatsoever!
Trustpilot
3 days ago
2 weeks ago