* Sand particles are the largest of the three soil particles, ranging in size from 0.05 to 2.0 millimeters. Sand particles are typically round and smooth, so they don't hold together as well as silt and clay particles. Sandy soils are therefore loose and well-draining.
* Silt particles are smaller than sand particles, ranging in size from 0.002 to 0.05 millimeters. Silt particles are typically flat and platy, so they can pack together more tightly than sand particles. Silty soils are therefore more compact and less well-draining than sandy soils.
* Clay particles are the smallest of the three soil particles, ranging in size from less than 0.002 millimeters. Clay particles are typically flat and plate-like, with a large surface area. Clay particles can hold water and nutrients very tightly, so clay soils are often heavy and poorly drained.
The texture of a soil can be determined by feeling the soil between your fingers. Sandy soils feel loose and gritty, while silty soils feel smooth and floury. Clay soils feel sticky and plastic.
The texture of a soil affects its ability to hold water and nutrients, as well as its ability to be drained. Sandy soils drain quickly and hold little water, while clay soils drain slowly and hold a lot of water. Silty soils are somewhere in between sandy and clay soils in terms of drainage and water-holding capacity.
The texture of a soil can also affect how well it supports plant growth. Sandy soils are often too dry for plants to thrive, while clay soils can be too wet. Silty soils are typically the best for plant growth because they provide a good balance of drainage and water-holding capacity.
