This is the medium that provides the plant nutrients. It is essential that this is a good organic loam.

The pH level is also very important. With the wrong level, the plants are unable to utilize the nutrients. The ideal pH level for fine turf is 6 to 7.

Natural soil contains organic material, minerals soil moisture and soil air. The mineral nutrients dissolve in soil moisture and are absorbed by the roots.

Soil air is necessary for roots to breath and affects chemical and biological processes in the soil.