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GAIA GREEN Oyster Shell Flour is a renewable alternative to mined limestone with a comparable capacity for ameliorating soil acidity. A single application can improve soil properties for several years. GAIA GREEN Oyster Shell Flour is an excellent choice for all gardens where increased soil pH is desired.

  • BENEFITS
    • An excellent source of slow release calcium.

    • Equivalent to limestone for ameliorating soil acidity.

    • Renewable resource.

  • GUARANTEED MINIMUM ANALYSIS

    Available Phosphoric acid (P₂O₅) ………………………3.0%

    Calcium (Ca) ……………….....................……………25.0%

    100 Mesh TYLER Screen ……………..………………80.0%

  • GUARANTEED MINIMUM ANALYSIS

    Calcium (Ca)....................................36.0%

    Neutralizing value (CaCO3)..............96.0%

    Passes 100 mesh TYLER Screen.......30%

  • DIRECTIONS FOR USE

    Gardens and Landscapes: For reducing soil acidity, broadcast and incorporate 0.5 - 6.75 kg per 10 m2 (1 - 13.8 lbs per 100 ft2). For equal pH adjustment sandy soils require a lower rate compared to clay soils and those high in organic matter. Consult an agronomist to determine appropriate rates for your garden soil.

    Field: Consult an agronomist to determine an appropriate application rate. Typical rates are between 560 to 6700 kg per ha (500 to 6000 lb per acre).

    Top-dressing hanging baskets, potted plants, and planter boxes: Mix in 15 ml per 4 L (1 tbsp per gallon) of soil or growing media. Apply monthly or as desired. Effects of this product on soil pH may take in excess of 1 year to be fully realized. 

SKU: 210000001867