Rock Phosphate
Organic Rock Phosphate Fertilizers
Custom Hydro carries CalPhos soft rock phosphate from Canton Mills — a natural, untreated colloidal clay phosphate delivering slow-release phosphorus, calcium, and soluble silicon for organic gardens, turf, and soil programs. OMRI listed and available in both granular and standard powder forms.
- 0-3-0 analysis — 3% available P2O5, 20% total P2O5, 20% Ca
- OMRI listed for certified organic production
- Not acid forming — will not cake or harden
- Granular and powder forms available
- Sizes: 1 lb, 4 lb, 20 lb, and 50 lb — ships nationwide
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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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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
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Roots Organics Super Phos Rock, 55 lbsRegular price $94.80Regular priceUnit price per$142.55Sale price $94.80Grower Price
Serving Arkansas, Kansas, Missouri and Oklahoma. Shipping Nationwide! Wholesale to the public!