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Do you have everything you need for spring? 🪴 click here to explore our newest items!
Do you have everything you need for spring? 🪴 click here to explore our newest items!

Soil Amendments

Mixed and single-source macro and micro-nutrients.
    $42.95 - $42.95
    $42.95
    $42.95 - $42.95
    $42.95

    Potassium Sulfate Granular (SOP) (0-0-50+S17%) - 50 lb Bag

    Potassium is essential for a vigorous root system, plant growth, disease resistance, as well as fruit and vegetable quality. SOP granular is a natu...

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    $42.95 - $42.95
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    Sold out
    $317.80 - $317.80
    $317.80
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    $317.80

    AgSil 16H Potassium Silicate Powder 52% SiO2 (0-0-32) 50 lb Bag

     AgSil helps plants to resist toxicity from phosphorous, manganese, aluminum and iron and increases tolerance to salt. AgSil also aids in resistanc...

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    Kmag or SulPoMag Granular (0-0-22+22S+11Mg) - 50 lb Bag

    Intrepid Trio brand Kmag or SulPoMag is 100% natural Langbeinite, a long-lasting, readily available source of low-chloride potassium (22%), magnesi...

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    K*ASH - Sunflower Hull Ash (0-4-34) - 50 lb Bag

    K*Ash enriches the soil, tempers acidity, and improves soil structure and microbial flora while providing potassium and other essential nutrients. ...

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    $63.40 - $63.40
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    $63.40

    BioLink® Potassium Fertilizer Liquid (0-0-6) - 2.5 Gallon

    BioLink Potassium Fertilizer (0-0-6) is a liquid fertilizer containing 6.0% soluble potash derived from sulfate of potash (potassium sulfate). It c...

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    $486.10 - $486.10
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    Maxicrop Soluble Seaweed Powder (0-0-17) - 44 lbs

    Concentrated Ascophyllum nodosum (brown seaweed) plus potassium hydroxide from the Norwegian coastline. This highly soluble seaweed provides trace ...

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    $1,789.00 - $1,789.00
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    Potassium Sulfate Granular (SOP) (0-0-50+S17%) - 2200lb Tote

    Potassium is essential for a vigorous root system, plant growth, disease resistance, as well as fruit and vegetable quality. SOP granular is a natu...

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    $1,789.00 - $1,789.00
    $1,789.00
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    Save 31% Save %
    $22.00
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    DTE Solution Grade Langbeinite (0-0-21.5) - 5 lb

    Langbeinite (AKA KMag, or SulPoMag) is a mineral that contains potassium (K), magnesium (Mg) and sulfur (S) – three of the essential nutrients that...

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    Diamond K Solution Grade Ultra Fines SOP (0-0-50) - 50 lb Bag

    Diamond K Ultra Fines Sulfate of Potash is a high-purity, finely ground (minus 325 mesh) soluble potassium sulfate designed to be applied in soluti...

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    $298.20 - $298.20
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    Grower's Secret Seaweed Powder Soluble (0-0-16) - 50 lb Bag

    High-quality soluble seaweed (Ascophyllum nodosum) for use in foliar sprays or irrigation water. Improves crop quality by promoting chlorophyll co...

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    MilAgro Keylamax Potassium (4-0-40) - 2 lb Bag

    Foliar powder fertilizer derived from potassium amino acid complexes. 4% N, 40% K2O. It improves the quality of the harvest, the color, flavor, w...

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    Diamond K KMS (0-0-21.5) - 50 lb Bag

    Also known as Langbeinite, Kmag, SulPoMag and Trio. Contains potassium (K), magnesium (Mg) and sulfur (S) – three of the essential nutrients that p...

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