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March 2023 Sale

Neptune's Harvest Hydrolyzed Fish Fertilizer 2-4-1

Regular price $19.50
Unit price

NOW WITH FREE SHIPPING (Excludes 5 Gallon Buckets)!!!!

Neptune's Harvest Hydrolyzed Fish Organic Fertilizer

OMRI Listed Organic

Neptune's Harvest Hydrolyzed Fish is an organic fertilizer made from fresh North Atlantic fish. It is made by a unique cold process that protects the vitamins, amino acids, enzymes and growth hormones. It also contains all the micro and macro nutrients naturally found in fish. The nitrogen and other nutrients are chelated, so they are readily available for plants consumption. Unlike fish emulsions, Neptune's Harvest's Fish Hydrolysate retains the natural fish proteins and oils and has no unpleasant odor. University studies have shown Neptune's Harvest to outperform 20-20-20 chemical fertilizers.

Neptune's Harvest Fish Hydrolysate Benefits

  • Neptune's Harvest contains many more nutrients than Standard N-P-K fertilizers. These additional nutrients address a wider array of deficiencies.
  • Neptune’s Harvest is made using a unique cold process. Unlike the destructive heat used to produce emulsions, this cold processing leaves important proteins, vitamins and other active compounds intact and readily available for plants, trees and turf.
  • Unlike fish emulsions, we do not remove any of the oils or meals from the fish that are highly valuable for plants, trees and turf.
  • Organic fertilizers stimulate beneficial microbe growth.
  • Increased marketable yields for fruits and vegetables.
  • Improved shelf life on fruits and vegetables.
  • Increase of natural sugar (brix) and nutrient density in plants.
  • Stronger and more colorful flowers and foliage.

Neptune's Harvest Fish Hydrolysate Application Instructions

Shake well before using. Prepare for one application only. Do not store diluted fertilizer.

Larger Application to Plants, Turf or Trees: Add 6 ounces per 1,000 square feet, diluted in no more concentrated than 12.5 ounces per gallon of water.  A typical rate would be 12 ounces per 2 gallons of water sprayed evenly per 1,000 square feet.  
House Plants:
 1 Tablespoon per Gallon of water.  Feed every 2-3 weeks.  Water lightly so that diluted fertilizer does not remain in drip dish.
Outdoor Plants: 1/8 Cup per Gallon of water.  Feed vegetables, flowers, trees, and shrubs, every 2-3 weeks. Apply generously to soil or as a foliar spray, until leaves are wet, top and bottom.  It is best to foliar feed early or late in the day.
Compost Enhancer: 1/4 Cup per Gallon of water every 2-3 weeks.
Seed Germination: Soak in a solution of 1 teaspoon per cup of water.

Neptune's Harvest Fish Hydrolysate Plant Food Available Sizes

  • 1 Pint (Covers 2,723 square feet).
  • 1 Quart (Covers 5,445 square feet).
  • 1 Gallon (Covers 1/2 acre or 21,780 sq. ft.).
  • 5 Gallon (Covers 2.5 acres).
  • 55 Gallon Drum (Covers 27.5 acres)*
  • 275 Gallon Tote (Covers 137.5 acres)*

    CLICK HERE for more information on professional wholesale pricing or for bulk purchases, including for 55 Gallon Drums and 275 Gallon Tote Sizes




Meets the requirements of the National Organic Program (NOP) for use in organic production.

Our sister company, Green Earth Ag & Turf, brings a decade of experience as the U.S. leader in providing Professional Landscapers, Farmers and Indoor Growers like you the best in organic products for higher yields, aesthetics and profits!  Discounted professional or wholesale prices can be found there.

to quickly and easily open a wholesale account with us or to get bulk and professional pricing. 

You can also contact us directly at (866) 374-5101 or for the top technical and customer service in the industry.  

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Customer Reviews

Based on 1 review
Mary Byrne

Good price on the purchased product. Will not be using product until growing season in MI.