Compost Tea Instructions

Compost tea is a highly concentrated microbial solution produced by extracting beneficial microbes from vermicompost and/or compost. The first key in producing quality compost tea is to start with high quality, microbial-rich compost. After that, there are four essentials in creating the best possible growing situation for the microbes: water, air, food, and comfort. The water should be clean, de-chlorinated, potable water. Compost tea brewers are available from many companies and feature aeration systems that ensure the microbes receive adequate oxygen. These companies also provide pre-mixed and packaged nutrients to feed the diverse populations of both bacteria and fungi. Finished compost tea can be used as a soil application or foliar spray.

Our customers found that the addition of 0.5kg SEA-90 sea mineral solids per 400L microbial solution prior to brewing doubles the microbial populations thereby improving the finished compost tea.

Compost Tea (two-step process):

  1. For either Soil or Foliar application mix 0.5kg SEA-90 per 400L of tea (one teaspoon per 20L tea) at start of brewing/aeration. Brew for 12 – 24 hours. 
  2. Complete the second step of the process based on your application below:

Soil Application:

After tea has brewed for 12-24 hours, mix in an additional 1kg SEA-90 per 400L of tea (two teaspoons per 20L tea) and apply 40L of this mixture per acre directly on the soil surface.

For gardens, we suggest applying 4L per 30 square meters.

Soil applications of compost tea put the microbes to work where needed most, plus the additional SEA-90 provides the minerals and trace elements required for a good start. Application of SEA-90 compost tea has shown to suppress plant and soil disease, increase earthworm populations, improve soil structure, retain nutrients, and increase soil-water retention ability.

Foliar Application:

After tea has brewed for 12-24 hours, mix in an additional 0.5kg of SEA-90 per 400L of tea (one teaspoon per 20L tea) and apply 40L per acre.   For gardens, fill one 10L pump sprayer and apply.  The objective is to cover at least 70 percent of leaf surface (top and bottom).

SEA-90 acts as a natural surfactant on the leaf surface and provides additional minerals and trace elements necessary for plant growth and development. When foliar applied, the beneficial microbes in compost tea occupy the plant tissue surface and convert minerals and trace elements in SEA-90 to plant-available nutrients. This increases the Brix readings, and pests and diseases are suppressed.

Compost Tea with SEA-90Research(PDF)

Compost Instructions