BuildASoil Multi-Cal
Best organic mineral supplement for dedicated soil health enthusiasts.
This comprehensive soil amendment simplifies calcium management by combining six distinct natural sources into one blend. It provides a diverse, accessible mineral profile that supports robust plant development and overall soil vitality without the need for complex testing.
$25.00
Who it's for
- Organic gardeners seeking long-term soil health and mineral stability
- Living soil enthusiasts who prefer low-maintenance, slow-release amendments
- Growers working with heavy clay or compacted organic soils
Who should skip it
- Cultivators needing an immediate rescue for starving plants
- Indoor gardeners sensitive to dust or working in tight spaces
- Hydroponic growers using synthetic salts and sterile reservoirs
Performance breakdown
Nutrient Diversity
Six distinct calcium sources provide a comprehensive, long-term soil mineral profile.
Bioavailability
Humic acid inclusion significantly improves mineral uptake and plant root absorption.
Application Versatility
Seamlessly transitions between soil mixing, re-amending beds, and simple topdressing.
Soil Chemistry Balance
Effectively stabilizes pH while correcting common calcium deficiencies in organic gardens.
Ease of Handling
Dry, granular texture makes measuring and distributing clean and straightforward.
Ingredient Quality
Sourced from high-grade natural materials like oyster shell and fish bone.
Key Specs
Ingredients
Calcium Montmorillonite Clay Rock Dust, Oyster Shell Flour, Fish Bone Meal, Diamond K Gypsum, Wollastonite, Humic Acid
Application
1-2 cups per cubic foot for mixing, 2 tablespoons per plant for topdressing
Package Weight
3 lb, 12 lb, 44 lb options
Primary Benefit
Calcium Supplementation and Soil Health
Water Soluble
No
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