What is the composition of human composting soil?

The Recompose process creates approximately one cubic yard of soil—approximately 500 pounds to over 1,000 pounds. Soil tests indicate compost created by the Recompose process is appropriate for established shrubs, trees, house plants, and flower gardens; use on tender annuals should be avoided.

Analysis indicates compost that is good for use on plants. The pH range of Recompose compost is usually between 6.5 and 7, which is ideal for most plants. Electrical conductivity is moderate, indicating the presence of soluble (plant-available) ions. The nitrogen-phosphorus-potassium-sulfur content is balanced, providing good nutrient content with a good supply of macronutrients.

Respiration test results indicate Recompose compost is at “Very Stable” levels, indicating that most of the “fast pool” of sugars have been used up by microbes and nutrients are stabilized. Nitrate content is high, indicating aerobic status and advanced decomposition. Bioassay does show relative immaturity, so we recommend use as a mulch and at lower concentration around roots of young plants.

Recompose follows all compost-testing regulations put forth by the Washington State Department of Licensing and the Board of Health.