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Olympus Myco Gypsum Powder is a premium, lab-grade calcium sulfate dihydrate soil amendment designed to optimize mushroom substrates and garden soils. With 97%-99% purity, it enhances soil structure by preventing compaction, improving airflow, and balancing moisture retention. Packaged in a HEPA enclosure, it ensures contamination-free application, delivering essential calcium and sulfur nutrients that promote robust plant and mushroom growth.







| ASIN | B0C5K2SSP1 |
| Best Sellers Rank | 81,814 in Garden ( See Top 100 in Garden ) 1,463 in Garden Fertilisers |
| Customer Reviews | 4.8 4.8 out of 5 stars (521) |
| 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 |
B**Y
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
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!
S**R
Works well
S**V
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.
Trustpilot
3 days ago
1 week ago