Improving Your Soil- - Sources for - Nitrogen | Calcium | Boron | Magnesium | Potassium | Sulfur


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Gardening Tips -


    boron

    sources are:   borax

    calcium

    sources are:   oyster shells and gypsum

    magnesium

    sources are:   epsom salts, dolomitic lime

    Nitrogen


    You get it free from grass clippings and leaves.
    Other sources are:   alfalfa meals, blood meal, fish emulsion, fish meal, guano and soybean meal
    Nitrogen also stimulates vegetative growth as in healthy leaves etc.

    Phosphorus

    For that I usually buy something like Bonemeal.
    Other sources are:   rock phosphate, colloidal phosphate.
    Phosphorus is necessary for fruit and flower formation and rapid stem growth in seedlings.

    Potassium

    Potassium helps to form stronger roots, stems and deepens the flower colour. You get it free from wood ashes.
    Other sources are:   granite meal, greensand and sul-po-mag,

    sulfur

    sources are:   gyspsum and flowers of sulfur

    other micronutrients are:

    kelp meal, kelp and seaweed extract

    All about Soil