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Calphos Soft Rock Phosphate - Regular Powder (50 lb) Calphos Soft Rock Phosphate - Regular Powder (50 lb) Fertilizer
Calphos Soft Rock Phosphate - Regular Powder (50 lb) Calphos Soft Rock Phosphate - Regular Powder (50 lb) Fertilizer
Calphos Soft Rock Phosphate - Regular Powder (50 lb) Calphos Soft Rock Phosphate - Regular Powder (50 lb) Fertilizer
Brand: Calphos
Item Number: F2101

Calphos Soft Rock Phosphate - Regular Powder (50 lb)

Colloidal Phosphate for Slow-Release

Listed for Use in Organic Agriculture by the Organic Materials Review Institute Approved for Organic Agriculture by the California Department of Food and Agriculture

Regular price
$28.99
In Stock
Sale price
$21.99
Ships from Northern CA.
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Description

The best natural fertilizer source of phosphorus and calcium. It is comprised of the bony structures of prehistoric marine creatures mined in Florida from the best deposit in the country. An immediately available and a long-term source of phosphorus. Not the same as the hard rock phosphate, sold by most nurseries and farm suppliers, which is not nutritionally as readily available.

  • Averages 20% P2O5 (3% immediately available), 20% Calcium
  • Soft Rock Phosphate Fertilizer should be applied and worked in prior to planting
  • Use at 5 lb per 100 square feet or 1 ton per acre on phosphate deficient soils, less on fertile soils
  • Trees and perennials in vegetable garden for flowering plants, use 1-10 lb per planting hole, depending on plant size
  • Supplies phosphorus (P) and calcium (Ca) for up to 5 years after application, depending on the crop

Features

    Characteristics

    Organic Status :
    Approved for Use in Certified Organic Agriculture
    Animal-Based : No
    Fertilizer Type : Powdered/Granulated/Meal
    Major Nutrients : Calcium
    Major Nutrients : Over 3% Phosphorus
    Major Nutrients : Trace Minerals
    Nutrient Release Rate : Long-term (4+ Months)
    Use as Foliar : No
    Organic Certifier: OMRI, CDFA

    Useful Information

    Shipping

    Does not qualify for Flat Rate Shipping.

    Cannot be combined with other items in a package, due either to its size or manufacturer packaging.

    Shipping Weight: 55.0 lb

    Dimensions: 20.0"L x 13.0"W x 4.0"H

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