NPK Content

• Fish emulsion contains a beneficial balance of nitrogen, phosphorous and potassium, known as NPK content. Nitrogen promotes foliage growth and reproduction, phosphorous is important for plant health and aids in the flowering of plants, and potassium enables plants to metabolize their food and convert it into energy. Although the content of these nutrients can vary, fish emulsion typically has a NPK analysis of 5-2-2, meaning 5 percent nitrogen, 2 percent phosphorous and 2 percent potassium.
  
  

Trace Elements

• Fish emulsion carries many trace elements, organic matter and growth hormones that plants need to thrive. Not only do these elements boost plant growth, they also help protect plants from diseases and pests.
  
  

Quick Absorption

• An effective fertilizer should provide nutrients to plants when they need it. Fish emulsion can be used as a foliar feed that is applied directly to plant's leaves. Instead of waiting for fertilizers to be processed by soil microbes, foliar feeding of fish emulsion provides quick-absorbing food to plants. Applying emulsion directly to a plant's foliage means it is able to utilize more of the nutrients if it had been applied to the soil, resulting in quicker growth and larger plants. Fish emulsion can also be applied to the soil to act as a root fertilizer.
  
  

Seedling Growth

• Many growers use fish emulsion to fertilize seeds and feed transplanted seedlings. In the early stages of plant growth, emulsion's quick-release action provides vital nutrients necessary for the growth of leaves and roots. Seeds and young plants essentially get a jump start on life.
  
  

Odor

• Few gardeners consider the strong smell of fish emulsion to be a positive. However, the pungent odor actually has benefits. Fish emulsion serves as a natural and humane method of pest control. Herbivores like deer and rabbits are only interested in eating plants and tend to find the scent of fish emulsion offensive. They will stay away from plants sprayed with fish emulsion fertilizer, resulting in the protection of the plants.