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From the Ocean to Your Farm

Seaweed Powder Soluble 0-0-16

Plant-Based Water Soluble Seaweed Extract

Grower's Secret Seaweed Powder comes from kelp. Our Seaweed Powder can be applied as a foliar application or through irrigation to provide nutritional support, prevent or correct potash nutrient deficiencies that could limit growth and yields, and improve crop quality. It is suitable for crops of all kinds including conventional, organic, turf, and ornamental. 


Guaranteed Analysis 0-0-16
Soluble Potash (K2O)...16.0%

Derived from: Ascophyllum nodosum and potassium hydroxide.

Product sizes and weights

Seaweed Powder Soluble 0-0-16, 50lb bags
Seaweed Powder Soluble 0-0-16, 44 x 50lb bags (Pallet)
Grower's Secret Soluble Seaweed Powder
2024 OMRI + CDFA-4-color

How is Grower's Secret Seaweed Powder applied?

Grower's Secret Soluble Seaweed powder is a kelp product that can be used as part of a comprehensive nutrient management program. It can be applied as a foliar spray, a root soak or through a drip application on all agricultural crops including trees, woody plants and turf. Soluble seaweed is used to enhance chlorophyll content, root growth and flower set and development and helps improve crop quality. 

Will Grower’s Secret Soluble Seaweed Powder damage or burn my crops?

Grower's Secret Soluble Seaweed powder should only be used according to plant needs and suggested use rates.  If you have not used a product before, we recommend that you conduct a small jar compatibility test before mixing products to be applied at the same time in the field and also conducting a small infield phytotoxicity test before you apply it in wide-scale use. 

What is the shelf life of Grower's Secret Seaweed Powder Kelp?

About two years if kept away from moisture and sealed in the original container.

What packaging sizes is Grower’s Secret Soluble Seaweed Powder sold in?

Grower's Secret Soluble Seaweed powder is available in 50 lb. bags and 1,125 lb. super sacks.

Can Grower's Secret Soluble Seaweed powder be used through drip systems?

Grower's Secret Soluble Seaweed can be applied through a drip system at suggested use rates. Check system calibration and function to assure even distribution and proper application rates are being applied.  

What is the proper use rate for Grower's Secret Soluble Seaweed powder?

Growers can apply 14-21 oz of Soluble Seaweed powder in a foliar application in sufficient water for for coverage.  Soil applications should be applied at a rate of 2-5 pounds per acre. All applications should be made according to plant needs as determined form plant and soil analysis.  


Grower's Secret 0-0-16 Seaweed Powder

Among it's many benefits are:

  • Derived from Norwegian Kelp (Ascophyllum nodosum)
  • Rich source of Potassium 0-0-16
  • Water soluble for immediate release
  • Certified organic but suitable for all crops


Growers tell us our Soluble Seaweed Powder works well and is a good value.

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  • North Atlantic Variety
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