TEA GROWING FROM THE ROOTS UP
The roots of the tea bush grow towards gravity. The bushes that grow on a horizontal surface first penetrate the shallow top layer of soft arable soil and then gradually reach the deeper layer of hardened subsoil. Topsoil is softer and contains more air, which makes it easier for the roots to penetrate and grow deeper. On the contrary, subsoil is a more densely compressed stratum in which it is more difficult for roots to spread into.