As a result, lawns in sandy soils cannot survive through the dry summer months without frequent watering. During drought conditions when watering is prohibited the lawns in sandy soils may die. Silt particles feel smooth and slippery when rubbed in the palm of your hand. These particles are between 0.002 and 0.05 mm. Soils with a high silt content have small void space therefore have poor aeration and drainage.
Clay soils have poor structure and very small spaces between particles.
This causes them to have low permeability and more extensive problems of poor drainage and aeration found in silty soils. Clays do have a high moisture holding capacity, but due to the small size of the pore spaces, this moisture is not available for vegetational uptake. Compacted glacial till is composed a variety of poorly sorted rock and mineral fragments of silt, sand, gravel and traces of clay. The soil is very dense and have little soil structure. These soils often have high bulk densities, low porosity, and low void ratios.