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Deal.ai › Brands

Is KMS on Sale? November 2026

Prices checked Nov 10, 2026, 10:43 AM ET

Is KMS on sale?

Not right now: KMS prices are at their usual levels.

KMS prices today, and how low they've been

  • KMS
    KMS Potassium Magnesium Sulfate 0-0-21.5 Sul-Po-Mag Solution Grade Fertilizer Powder (5 Pounds)
    KMS Potassium Magnesium Sulfate 0-0-21.5 Sul-Po-Mag Solution Grade Fertilizer Powder (5 Pounds)$38.50 at Amazon    Visit Amazon
  • KMS
    KMS Conscious Style Everyday Shampoo 10.1 oz
    KMS Conscious Style Everyday Shampoo 10.1 oz
$19.80 at Beauty Plus Salon
Visit Beauty Plus Salon
  • KMS
    KMS Conscious Style Everyday Shampoo
    KMS Conscious Style Everyday ShampooPrices and history

    • Not right now. KMS prices are at their usual levels: the KMS Potassium Magnesium Sulfate 0-0-21.5 Sul-Po-Mag Solution Grade Fertilizer Powder (5 Pounds) is $38.50 at Amazon. Any KMS deal shows here as soon as it starts.

    KMS sells specialty agricultural and hydroponic inputs, best known for solution-grade mineral fertilizers such as its potassium magnesium sulfate powder. That product dissolves cleanly for fertigation and delivers potassium, magnesium and sulfur without chloride or nitrogen. Every store's price for KMS products is checked and tracked, with each store's price history shown alongside.

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    Questions and answers

    What is KMS potassium magnesium sulfate used for?
    It supplies potassium, magnesium and sulfur to crops and hydroponic solutions. The sulfate form suits chloride-sensitive plants and soils. It is commonly used for fertigation, foliar feeding and blending into nutrient programs.
    Is the KMS 0-0-21.5 powder water soluble?
    Yes, it is sold as a solution-grade powder intended to dissolve for liquid feeding. Stir it into water and use it through drip, fertigation or spray systems. Dissolve fully before application and follow the label rate.
    Does KMS fertilizer contain chloride?
    No, potassium magnesium sulfate carries its potassium as sulfate, not chloride. That makes it a fit for chloride-sensitive crops such as citrus, berries and many vegetables. It also adds no nitrogen, so it will not push leafy growth.
    What is the guaranteed analysis of KMS 0-0-21.5?
    The grade is 0-0-21.5, meaning no nitrogen or phosphate and 21.5 percent potassium. The sulfate form also supplies magnesium and sulfur. Check the product label for the exact magnesium and sulfur percentages.
    How should KMS powder be stored?
    Keep it dry and sealed, since the powder draws moisture from the air. Store it away from damp floors and open containers. A tightly closed bin keeps it free-flowing between uses.
    Are there KMS discount codes?
    Deal.ai checks what KMS products actually cost at every store, so a real markdown shows on this page as a deal as soon as it starts, and each product's page has its price history to tell a sale from its usual price.