Root and Stump Killer

Potassium Nitrate

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

Thank you for submitting your review

Based on 26 reviews Average Rating 4.88 stars out of 5
Filter 23 Reviews with 5 star rating
Filter 3 Reviews with 4 star rating
Filter 0 Review with 3 star rating
Filter 0 Review with 2 star rating
Filter 0 Review with 1 star rating
  • T
    Timothy Sawyer T. S. Timothy S.

    Great product....bad packaging

    I have bought this several times....however this time...they just dumped the powder into a USPS bag which leaked out the ingredients into the shipping box.............don't do this again Seed World....not good.

  • O
    Olga Vazquez O. V. Olga V.

    Exactly what I needed.

    Well packaged, and the right amount of chemical. I do not like keeping chemicals around and prefer to buy the chemicals every season. The communication and delivery time was excellent. I can say that I am 100% satisfied.

  • K
    Karen Brvenik K. B. Karen B.

    Good to go

    Every thing came in.. one of the other chemicals that shipped had a bag leaking. It is all fine though and not the fault of the company that the manufacturer packaging is failing

  • A

    just what I needed packaged great

    It's Potassium Nitrate packaged in resealable bags, inside another bag inside a box. very happy with the quality of the product and the pains used to make sure it arrived in a good and usable condition. will definitely buy again.

  • R
    Robin Palculict R. P. Robin P.

    Fast shipping

    My order came in fast and with zero issues.

  • M
    Muwei Zhang M. Z. Muwei Z.

    Good product and fast shipping

    Good product and fast shipping

  • R
    Robert Bunao R. B. Robert B.



  • S
    Scott hunter S. H. Scott h.

    Good deal

    Fast delivery

  • F
    Frank Belinskey F. B. Frank B.

    Fast and professional service. Thanks!

    Potassium Nitrate

  • D
    Dennis Hylton D. H. Dennis H.

    Potassium Nitrate

    Things were great

  • C
    Craig Dremann C. D. Craig D.

    Good price for a good product!

    Very reasonable price for a good quality product!

  • H
    Heath Dougherty H. D. Heath D.

    Good quality Came as described!

    Potassium Nitrate - 8 Oz.

  • S
    Svetlana DeGrey S. D. Svetlana D.

    Prompt shipment and the product is good.

    The product arrived promptly. Thank you!

  • D
    Don Greene D. G. Don G.


    Exactly as advertised. We’ll order again.

Ask your Question about this product

Category: Potassium Nitrate

Type: Chemicals

Brand: Seed Barn

Related Items