What is it?
Approximately 50% calcium carbonate, 25% biotite, 12% apatite, 13% trace and rare earth elements
Spanish River Carbonite volcanic rock will not wash away. Calcium carbonate, potassium, rock phosphate, and over 50 micronutrients. Combats soil toxicity and promotes soil microbiology.
How to use it?
1/25 bag per yard or 10 lb per yard
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