Silviculture means timber farming, i.e., growing trees for timber. It can be defined as the science of cultivating trees. The ground is first cleared of all vegetation, well-drained and then seedlings of species are grown in the nurseries before planting. A part of the land is planted with the same species at the same time, so that all the trees mature together and make clear-cutting possible. Foresters make use of the science of genetics to have improved growth rates and resistant to diseases and pests. Thus, the goal of getting a correct balance between the annual harvest and the growth of wood is achieved and we get a sustained yield of timber.