In a FarmMountain garden there are two different types of tree: coffee trees and shade trees. Coffee trees are planted about two metres apart; shade trees approximately nine. The trees can then grow freely, getting the light and energy they need. A shade tree grows fast, reaching around four metres in four years. It provides welcome shade for the coffee trees below. Nutritional material from the ground is stored in its leaves and seeds. When fall comes, which is twice a year, the coffee tree draws on the nutrients from these fallen leaves. The uppermost root system of the coffee trees pulls them all in. Using this technique, coffee trees can provide a yield that is up to two times as great per harvest.