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Your #1 Source for Organic & Biological Farm Supplies
Your #1 Source for Organic & Biological Farm Supplies

Soil Amendments

Mixed and single-source macro and micro-nutrients.
  • Original price $35.00 - Original price $35.00
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    $35.00
    $35.00 - $35.00
    Current price $35.00

    Allganic Soluble Potassium Sulfate SOP (0-0-52+S18%) - 50 lb Bag

    Potassium Sulfate Allganic Brand Water Soluble SOP (0-0-52-Sulfur 18%) This is a soluble SOP for crop production. It is best to apply according to ...

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    Original price $35.00 - Original price $35.00
    Original price
    $35.00
    $35.00 - $35.00
    Current price $35.00
  • Original price $249.00 - Original price $249.00
    Original price
    $249.00
    $249.00 - $249.00
    Current price $249.00

    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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    Original price $249.00 - Original price $249.00
    Original price
    $249.00
    $249.00 - $249.00
    Current price $249.00
  • Original price $43.00 - Original price $43.00
    Original price
    $43.00
    $43.00 - $43.00
    Current price $43.00

    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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    Original price $43.00 - Original price $43.00
    Original price
    $43.00
    $43.00 - $43.00
    Current price $43.00
  • Original price $14.00 - Original price $14.00
    Original price
    $14.00
    $14.00 - $14.00
    Current price $14.00

    Potassium Sulfate Granular (SOP) (0-0-50+S17%) - 10 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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    Original price $14.00 - Original price $14.00
    Original price
    $14.00
    $14.00 - $14.00
    Current price $14.00
  • Original price $42.00 - Original price $42.00
    Original price
    $42.00
    $42.00 - $42.00
    Current price $42.00

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

    Enriches the soil and tempers acidity. Improves soil structure and microbial flora. Its high pH (~10) is beneficial for flowers and perennials when...

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    Original price $42.00 - Original price $42.00
    Original price
    $42.00
    $42.00 - $42.00
    Current price $42.00
  • Original price $46.00 - Original price $46.00
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    $46.00
    $46.00 - $46.00
    Current price $46.00

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

    Potassium Fertilizer Liquid (0-0-6) - From ORGANIC BIOLINK® Contains 6.0% soluble potash essential for a vigorous root system, improved plant growt...

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    Original price $46.00 - Original price $46.00
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    $46.00
    $46.00 - $46.00
    Current price $46.00
  • Original price $32.00 - Original price $32.00
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    $32.00
    $32.00 - $32.00
    Current price $32.00

    Kmag or SulPoMag Granular (0-0-22+21S+11Mg) - 50 lb Bag

    Intrepid Trio brand is 100% natural Langbeinite, a unique mineral with three essential nutrients in every granule. Trio provides a long-lasting, re...

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    Original price $32.00 - Original price $32.00
    Original price
    $32.00
    $32.00 - $32.00
    Current price $32.00