How to Fertilize Vegetables With Fish Emulsion


Fish emulsion is organic fertilizer used on edible vegetables and ornamental plants to deliver nitrogen, phosphorous and potassium plus micro-nutrients to the soil and plant roots. They are sold in concentrated liquid form and are mixed with water before application. The emulsion is made from blended-up fish tissues and bones that have been treated with heat and acid to prevent unhealthy bacteria from developing. Commonly found with a guaranteed analysis ratio of 5-2-2, fish emulsion offers benefits that persist in the soil for several months at a stretch.

Step 1

Mix 6 tablespoons of a liquid fish emulsion product for every gallon of irrigation water, multiplying the recipe as needed to adequately water your vegetable patch. Mix large batches in a bucket or watering can just as you need it.

Step 2

Pour the treated water around the base of the plants and over the foliage if desired to water and feed the plants. Wet the soil to the degree of moisture that particular vegetable plant prefers.

Step 3

Repeat applications of fish emulsion with irrigation every one to four months in keeping with the dosing and frequency recommendations on the product label.

Tips and Warnings

  • Do not overfeed the plants simply because it is an organic product. Excess nitrogen from any source can fuel foliage growth but stunt vegetable flowering and development.

Things You'll Need

  • Bucket or watering can


  • North Carolina State University: Fertilizer from tfishhe Sea: Fish Emulsion
  • Colorado State University: Organic Fertilizer, Page 5
Keywords: organic fertilizer, fish emulsion, fertilizing vegetable gardens

About this Author

An omni-curious communications professional, Dena Kane has more than 17 years of experience writing and editing content for online publications, corporate communications, business clients, industry journals, as well as film and broadcast media. Kane studied political science at the University of California, San Diego.