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Gypsum Powder for Mushroom Substrate (5 lb) | Lab Grade | Packed in a HEPA-Filtered Facility | Highly Soluble for Growing Mushrooms | Soil Conditioner | (Calcium Sulfate Dihydrate) (5 Pounds)

Gypsum Powder for Mushroom Substrate (5 lb) | Lab Grade | Packed in a HEPA-Filtered Facility | Highly Soluble for Growing Mushrooms | Soil Conditioner | (Calcium Sulfate Dihydrate) (5 Pounds)

$28.49 USD
$28.49 USD
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About This

  • [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.
  • [Improves Soil Structure] - Reduces clumping and allows for better absorption of water. Gypsum also provides essential minerals for increased yield. Gypsum can also repair damage from excess salt in soil.
  • [Versatile Substrate Amendment] - Use gypsum for mushroom substrate, your garden, landscaping, grain spawn, and so much more. Supports plant health and can increase yield by 50% or more when added to mushroom fruiting blocks. Best known as an essential ingredient in CVG, which is a substrate blend of coco coir, vermiculite, and gypsum.
  • [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.

Overview

  • Brand : Mushroom Merchant
  • Item Weight : 5 Pounds
  • Item Form : Powder
  • Coverage : Gypsum to Substrate Ratio 1:10
  • Mixing ratio : 1:10
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Our customers tell it better than we do!

Excellent

4.7

/ 5

based on 1 067 reviews

Great Curation!

It’s clear that everything is handpicked with love and experience. I didn’t have to waste time — they had exactly what I needed. Shopping here made gardening feel exciting again. It’s clear that everything is handpicked with love and experience. I didn’t have to waste time — they had exactly... It’s clear that everything is handpicked with love and experience. I didn’t have to waste time — they had exactly what I needed. Shopping here made gardening feel exciting again.

Lucas

Fast Delivery, Beautiful Plants

I was worried about shipping damage, but everything arrived perfectly. The packaging was thoughtful, and the plants settled quickly into their new home. I’ll definitely be ordering again! I was worried about shipping damage, but everything arrived perfectly. The packaging was thoughtful, and the plants settled quickly into... I was worried about shipping damage, but everything arrived perfectly. The packaging was thoughtful, and the plants settled quickly into their new home. I’ll definitely be ordering again!

Sophia

🌱 From Brown Thumb to Green

I used to kill every plant I touched. Thanks to these curated selections, I now have a thriving little garden that brings me joy every day! 🌼 I used to kill every plant I touched. Thanks to these curated selections, I now have a thriving little garden... I used to kill every plant I touched. Thanks to these curated selections, I now have a thriving little garden that brings me joy every day! 🌼

Ava

Amazing Seeds, Great Germination

I planted their herb seeds and within days, tiny sprouts appeared! Everything grew fast and healthy — the quality was outstanding. Now my kitchen smells like fresh basil every day! 🌿 I planted their herb seeds and within days, tiny sprouts appeared! Everything grew fast and healthy — the quality was... I planted their herb seeds and within days, tiny sprouts appeared! Everything grew fast and healthy — the quality was outstanding. Now my kitchen smells like fresh basil every day! 🌿

Liam

Quality You Can Feel

Every tool I received feels solid and well-crafted. The plants were vibrant and clearly chosen with care. Shopping here felt like getting expert advice without the pressure. Every tool I received feels solid and well-crafted. The plants were vibrant and clearly chosen with care. Shopping here felt... Every tool I received feels solid and well-crafted. The plants were vibrant and clearly chosen with care. Shopping here felt like getting expert advice without the pressure.

Daniel

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