Soft Rock Phosphate
Soft Rock Phosphate with Soluble Silicon
CalPhos soft rock phosphate delivers slow-release phosphorus and calcium alongside soluble silicon — a valuable secondary benefit that supports plant cell wall strength, pest resistance, and overall soil health. Natural, untreated colloidal clay phosphate from Canton Mills, OMRI listed for organic production.
- Soluble silicon for enhanced plant health and pest resistance
- OMRI listed for certified organic production
- Not acid forming — will not cake or harden
- Available in granular and standard powder forms
- Sizes: 1 lb, 4 lb, 20 lb, and 50 lb
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CalPhos POWDER 50 lb.Regular price $18.94Regular priceUnit price $0.38 per lb
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CalPhos soft rock phosphate GRANULAR 50 lb.Regular price $18.94Regular priceUnit price $0.38 per lb
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Triple Super Phosphate | 0-46-0 | 15% Ca...Regular price $40.26Regular priceUnit price $0.81 per lb$66.00Sale price $40.26Grower Price -
CalPhos Soft Rock Phosphate GRANULAR 20 lb.Regular price $13.25Regular priceUnit price $0.66 per lb
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CalPhos Soft Rock Phosphate GRANULAR 4 lb.Regular price $5.00Regular priceUnit price $1.25 per lb
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CalPhos soft rock phosphate 4 lb. STANDARD POWDERRegular price $5.00Regular priceUnit price $1.25 per lb
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Fertoz Organic POWDERED Rock Phosphate FertilizerRegular price $32.04Regular priceUnit price per
$44.50Sale price $32.04Sold out -
CalPhos Soft Rock Phosphate GRANULAR 1 lb.Regular price $2.97Regular priceUnit price $2.97 per lb
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CalPhos Soft Rock Phosphate POWDER 20 lb.Regular price $13.25Regular priceUnit price $0.66 per lb
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CalPhos Soft Rock Phosphate POWDER 1 lb.Regular price $2.97Regular priceUnit price $2.97 per lb
Serving Arkansas, Kansas, Missouri and Oklahoma. Shipping Nationwide! Wholesale to the public!