Gypsum Fine Grade | Grain Substrate Supplementation
Gypsum Fine Grade | Grain Substrate Supplementation
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🌾 Fine Grade Gypsum – Ideal for Grain Spawn Preparation
Fine grade calcium sulfate (gypsum), a trusted mineral additive used by mushroom growers to improve grain spawn quality and promote robust mycelial health.
Our gypsum is ultra-fine and food-safe, perfect for evenly mixing through hydrated grain prior to sterilisation. It helps prevent clumping, balances pH, and provides essential calcium and sulfur—key nutrients for vigorous mycelium growth.
✅ Key Benefits
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Improves grain texture and flow
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Helps reduce grain sticking/clumping
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Enhances calcium and sulfur availability for mushrooms
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pH stabilising properties
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Suitable for sterilisation or pasteurisation
📦 Available Sizes
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250g
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500g
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1kg
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2kg
💡 Usage Recommendations
Add 1–2% by dry weight to hydrated grains before sterilisation. Mix thoroughly for best results. Commonly paired with millet, wheat, rye, or sorghum grain for gourmet mushroom spawn.
Let customers speak for us
I live in WA, and placed a large order of both turmeric and ginger as we can’t get anything organic here in WA! let me tell you ! This is OUTSTANDING quality Ginger and Turmeric! It arrived within 3 days in perfect condition as the owners took every effort to prepare the produce properly before packaging and shipping. Never have I been so happy and I’ll continue to support them! Their commitment to deliver not only quality produce but quality service is not often seen anymore these days Thank you guys , 🧡
Helpful and prompt service.
Fantastic ginger. Will buy again with the new season
Love the products love the service with a smile 😃
I bought some organic gypsum, it was delivered quickly and looks the goods
Looks good and is growing well, hopefully mushrooms soon
Ordered ginger and tumeric rhuzomes and they arrived quickly, fresh and are now growing.
Beautiful fresh ginger, great quality
Three weeks ago I received the kit and have just had my first harvest. The process was very easy and I loved watching the mushrooms grow daily.
This is my first experience of eating Lion’s Mane mushrooms and have been pleasantly surprised at how delicious they are.
Fresh ginger was delivered promptly. Thank you.
Great quality and clean. Thanks guys
First order, first freah lions mane, but can say the mushrooms are tasty.
The product l got was amazing and l will be getting alot more from Kai Kai farm in the future for sure. The service was fast and delivered on time. Thank you and l will be back.
