Silt is a very fertile soil mainly found near river banks. The soil particles of silt are smaller than sand and bigger than clay. It is one the best soils for any type of plantation. However silt is not easily available everywhere.
Loam (also known as Red Soil because of its red color) is a soil which is a perfect mix of Sand, Silt and Clay. The perfect Ratio is 40% Sand, 40% Silt and 20% clay. However the proportions differ and so does the soil properties. If the loam contains more of sand it is called as sandy loam or if it contains more of silt then it is called silty loam and likewise for clay loam. Loam being a mix of all the three is the most ideal soil for gardening.
Loam does not suffer any drawbacks of either clay or sand. The presence of sand allows air and water to penetrate easily. Clay helps in water retention and clay and silt both ensure ample supply of nutrients.
Synopsis: Loam does not create any Stress on the plant and is one of most ideal soils for gardening.
[Now you know why the Gardener always prefers red soil! The next time you visit the plant nursery do observe the soil!] 😉 🙂