Potassium Nitrate Powder

Seed Barn


99.8% Pure Potassium Nitrate Powder (Saltpeter)

Potassium nitrate is used in a variation of ways, but mostly seen in fertilizers and the removal of tree stumps. Produces wonderful nourishments for plants and promotes healthy and efficient plant growth as well. Providing nutrients is a vital part of the metabolic process in the plant's cell that acts as a water management source for the plant, ensuring a healthy style of living.

Characteristic Ratings

  • Colorless and Odorless
  • Water-soluble and chloride free
  • Protect chloride sensitive crops (strawberries, lettuce, beans, etc.)
  • Produce Fertilizer Blends
  • Greenhouse Grade

Customer Reviews

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Based on 108 reviews Average Rating 4.74 stars out of 5
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  • C
    Christopher Z C. Z. Christopher Z.
    14-08-2025

    šŸ‘

    šŸ‘

  • l
    larry smith L. S. larry s.
    13-08-2025

    Order shipped fast and complete.

    Thank you seed world.

  • T
    Travis Mcilree T. M. Travis M.
    05-08-2025

    Good product.

    Great price. Fast shipping.

  • R
    Robert W R. W. Robert W.
    03-08-2025

    Never received package horrible customer service

    Never received package. Says was delivered to mail box. I email them saying I did not receive it. I got one email saying contact my local post office that's it. My post office says was delivered so I take it I'm the rear. Three times they ask for a review and three times I reply I never got it. So good luck if what you order goes missing

  • R
    Ricardo Ramirez R. R. Ricardo R.
    01-08-2025

    a little delay but as advertised.

    fine(not super fine) KN03 powder. great for smoke bombs, black powder, stump removing......

  • J
    Jonathan Clary J. C. Jonathan C.
    31-07-2025

    I never received my purchase

    I did not get my stuff I ordered

  • B
    Bruce Cooke B. C. Bruce C.
    23-07-2025

    Great Product

    Great Product

  • t
    teberg dave T. D. teberg d.
    22-07-2025

    KNO3

    Good quality

  • B
    Ben Nichols B. N. Ben N.
    17-07-2025

    Very nice

    Very nice

  • L
    L. L. L. L. L. L.
    29-06-2025

    Very nice

    Perfect, just wish they came in resealable bags

  • T
    Toby Tam T. T. Toby T.
    28-06-2025

    excellent plant food

    KNO3 fertilizer promote the plant growing. Its balanced supply of potassium and nitrogen, make plants producing quality and quanr fruits in my garden.

  • R
    Ron C Cobb R. C. C. Ron C. C.
    12-06-2025

    Potassium nitrate

    Excellent fertilizer

  • L
    Lucas Giles L. G. Lucas G.
    11-06-2025

    THIS STUFF IS GASSSS

    Dawg my crops are 2x as fruitful this year cause of this stuff my soils ph is BALANCED

  • A
    Art Ondrejka A. O. Art O.
    03-06-2025

    Great product

    Product arrived well packed and dry. Granules were small and free flowing with little to no clumping. Appears to have the purity that was stated.

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Category: Potassium Nitrate

Type: Chemicals

Brand: Seed Barn



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