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10 Best gypsum for mushrooms in Canada
Best Choice01Olympus Myco97% Pure Gypsum Powder – High Solubility Calcium Sulfate Dihydrate for Soil, Lawns, Gardens, and Mushroom Substrate – Packaged in HEPA Enclosure – 10 lb
Main highlights- Solution Grade Gypsum: High-purity form of gypsum is an ideal soil amendment that improves soil structure, reduce soil erosion, and supply essential nutrients such as calcium and sulfur to plants and mushrooms. 97% calcium sulfate dihydrate.
- Reduces clumping: Adding gypsum to the substrate can help to reduce clumping and improve the overall texture of the substrate, which is important for air circulation.
- Promotes healthy growth: Our premium-grade gypsum powder provides the necessary pH balance and essential nutrients (calcium and sulfur) for mushrooms to thrive.
- Essential for mushroom growth: Gypsum powder is an essential ingredient in creating the ideal substrate for mushroom cultivation for several reasons such as pH adjustment, calcium supplementation, water retention, and allow for better oxygen circulation and mycelium development.
- Enhances water retention: Gypsum has a unique ability to absorb and retain water, which can help to regulate moisture levels in the substrate.
9.7Exceptional
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- 02Flatland Fungi
Shroom-Pro CVG Mushroom Substrate | 5LB | Pre-Sterilized | Nutrient Optimized Coco Coir Mixture | Made in Canada | Comes Hydrated to Field Capacity | Grow Mushrooms at Home | Flatland Fungi (5 LB)
Main highlights- Use as soon as possible, as pre-sterilized substrate only stays sterile for a limited time
- Spores, agar culture, liquid culture, & spawn are sold separately.
- Pre-sterilized, hydrated, & balanced pH for maximum yields. Best results with P. Cub. varieties.
- Made in Canada
- Includes specialty Unicorn mushroom grow bag w/ a 14A filter patch for fresh air exchange & keeping contaminants out
- Coco coir, vermiculite, & gypsum nutrient mixture for optimized mushroom growth
9.5Excellent
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- 03Mycology Basics
Food Grade Ultra-Fine Gypsum for Mushroom Substrates, Brewing, Tofu - No Additives, 97% Calcium Sulphate, 22.5% Calcium (Ca) 18% Sulphur (S) - Packed in HEPA Case
Main highlights- USE WITH BREWING OR TOFU: Our gypsum is great for use with brewing, as a tofu thickener, or in any number of food recipes that require thickener
- RESEALABLE BAG - Our gypsum is professionally packed and sealed, meaning the gypsum will remain as a fine powder and can be resealed for later use
- INCLUDED Myco Basics Gypsum is the highest grade organic gypsum available, containing 97% calcium sulfate dihydrate, 22.5% calcium and 18% sulfur. Our gypsum is 100% water soluble and fine powder, with no excess residue or impurities
- IMPROVES SOIL STRUCTURE - Organic gypsum has been shown to significantly increase crop yields and can, when used with garden lime, reduce nutrient runoff and increase soil food web quality
- IDEAL FOR FUNGUS SUBSTRATES - Our gypsum is packed in a moisture-controlled HEPA package, meaning the risks of contamination, clumping and other issues are significantly reduced
9.3Excellent
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- 04M.M BASICS
5 LB, Gypsum for Plants, Water Soluble, Rich in Calcium and Sulphur, Benefits Soil Structure, Porosity, Air Circulation, and Water Infiltration and Drainage (Gypsum 5 LB)
Main highlights- This product is 97% calcium sulfate dihydrate, which we can consider to be the purest.
- Moderate: 1.25-2.5 lbs/100 sq. ft
- Maintenance: 5-12.5 lbs/1000 sq. ft or 0.5-1.25 lbs/100 sq.ft
- Gypsum is a mined mineral fertilizer rich in calcium and sulphur. In addition to providing key nutrients, It benefits soil structure, porosity, air circulation, and water infiltration and drainage.
- Corrective: 2.5-5 lbs/100 sq. ft.
- APPLICATION RATES:
9.1Excellent
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Value for Money05LD CarlsonHome Brew Ohio B0064OGEZG Gypsum-1 lb., White
18% OffMain highlights- When using distilled water for brewing, gypsum adds hardness to the water
- Color: White
- Adds hardness to soft water when brewing
- 1 teaspoon of gypsum for 5 gallons
9.0Excellent
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- 06J PLUS T
J PLUS T Gypsum for Plants - Fast-Acting Calcium Sulphate Powder to Loosen Clay Soil & Improve Drainage - Natural Soil Conditioner for Houseplants, Gardens, Lawns, and Vegetables (2 LB)
Main highlights- SAFE, PURE & EASY TO APPLY: Our 97% pure Calcium Sulphate is finely ground and pelletized for low-dust, easy spreading with any standard spreader or by hand. It's a natural, safe choice for your garden, allowing kids and pets to return to the lawn immediately after application.
- REVITALIZE YOUR SOIL STRUCTURE: Say goodbye to compacted, heavy clay! Our fast-acting gypsum powder works immediately to break up dense soil, improving aeration, root development, and water penetration. Create the perfect foundation for your plants to thrive.
- ESSENTIAL CALCIUM & SULFUR BOOST: A powerhouse of nutrients for your garden. This natural mineral provides critical calcium to prevent common plant issues like Blossom End Rot in tomatoes and peppers, while sulfur enhances growth and vibrant colour. It's the secret to healthier, more productive plants.
- ENHANCED WATER EFFICIENCY: Transform your soil into a sponge, not a rock. Our solution-grade gypsum improves water infiltration and reduces wasteful runoff and pooling. This means water gets to the roots where it's needed, saving you time, water, and helping your plants survive dry spells.
- ALL-PURPOSE GARDEN & LAWN SOLUTION: Perfect for a wide range of applications. Use it to rejuvenate your lawn, enrich your vegetable garden, support your flowering shrubs, or even as a supplement for mushroom growing substrates. One natural product for all your gardening needs.
8.8Very Good
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- 07Olympus Myco
Gypsum Powder for Mushroom Substrate (1 lb), Lab Grade, Garden Soil Amendment (Calcium Sulfate Dihydrate), Packaged in HEPA Enclosure
Main highlights- Solution-Grade Purity (97%-99%): Premium gypsum soil amendment rich in calcium sulfate dihydrate to improve soil structure, reduce erosion, and support robust growth.
- Reduces Clumping & Improves Texture: Our garden gypsum loosens soil and substrate for better airflow, stronger root development, and healthier mushroom cultivation.
- Improves Soil & Substrate Structure: Prevents compaction and enhances air circulation for healthier roots and mushroom mycelium. Ideal for gardens, lawns, and grow operations.
- Enhances Water Retention: Promotes even moisture distribution, helping soil and substrate stay hydrated without becoming oversaturated or soggy.
- Boosts Plant and Mushroom Growth: High-purity gypsum for gardening delivers essential calcium and sulfur while maintaining a balanced pH for vibrant, thriving plants.
8.7Very Good
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- 08Elo's Premium
Calcium Sulfate Gypsum 100g
8.6Very Good
- 09J PLUS T
J PLUS T Gypsum for Plants - Fast-Acting Calcium Sulphate Powder to Loosen Clay Soil & Improve Drainage - Natural Soil Conditioner for Houseplants, Gardens, Lawns, and Vegetables (5 LB)
Main highlights- SAFE, PURE & EASY TO APPLY: Our 97% pure Calcium Sulphate is finely ground and pelletized for low-dust, easy spreading with any standard spreader or by hand. It's a natural, safe choice for your garden, allowing kids and pets to return to the lawn immediately after application.
- REVITALIZE YOUR SOIL STRUCTURE: Say goodbye to compacted, heavy clay! Our fast-acting gypsum powder works immediately to break up dense soil, improving aeration, root development, and water penetration. Create the perfect foundation for your plants to thrive.
- ESSENTIAL CALCIUM & SULFUR BOOST: A powerhouse of nutrients for your garden. This natural mineral provides critical calcium to prevent common plant issues like Blossom End Rot in tomatoes and peppers, while sulfur enhances growth and vibrant colour. It's the secret to healthier, more productive plants.
- ENHANCED WATER EFFICIENCY: Transform your soil into a sponge, not a rock. Our solution-grade gypsum improves water infiltration and reduces wasteful runoff and pooling. This means water gets to the roots where it's needed, saving you time, water, and helping your plants survive dry spells.
- ALL-PURPOSE GARDEN & LAWN SOLUTION: Perfect for a wide range of applications. Use it to rejuvenate your lawn, enrich your vegetable garden, support your flowering shrubs, or even as a supplement for mushroom growing substrates. One natural product for all your gardening needs.
8.4Good
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- 10Flatland Fungi
Shroom-Pro CVG Mushroom Substrate | 2.5LB | Pre-Sterilized | Nutrient Optimized Coco Coir Mixture | Made in Canada | Comes Hydrated to Field Capacity | Grow Mushrooms at Home | Flatland Fungi (2.5 LB)
Main highlights- Use as soon as possible, as pre-sterilized substrate only stays sterile for a limited time
- Spores, agar culture, liquid culture, & spawn are sold separately.
- Pre-sterilized, hydrated, & balanced pH for maximum yields. Best results with P. Cub. varieties.
- Made in Canada
- Includes specialty Unicorn mushroom grow bag w/ a 14A filter patch for fresh air exchange & keeping contaminants out
- Coco coir, vermiculite, & gypsum nutrient mixture for optimized mushroom growth
8.3Good
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