Updated: Mar 9
Did you know clays are the smallest part of a soil? Clay particles measure up to 0.002 mm across. A soil described as a clay has a higher proportion of clay than silts and sands, and the way the soil behaves is dictated by the clay.
A heavy clay is one where there is a very high
proportion of clay in the soil. A strong clay is one where the lumps (peds) of soil are difficult to break. Clays hold more nutrients and water than sands because of their surface area. Clays are valuable for growing crops, and Eastern Australian native plants prefer clay too.