The soil of the savanna is porous, with rapid drainage of water. It has only a thin layer of humus (the organic portion of the soil created by partial decomposition of plant or animal matter), which provides vegetation with nutrients. It can be determined as Mollisols among the 12 soil orders since Savanna is a type of grassland. Mollisols are one of the important and productive agricultural soils in the world and are extensively used for that purpose. Although Savanna is not used for agriculture and its soil conditions vary, depending on the location of the Savanna, it is still capable of providing grazing lands for animals and the nomads.
Plants of the savannas are highly specialized to grow in this environment of long periods of drought. They have long tap roots that can reach the deep water table, thick bark to resist annual fires, trunks that can store water, and leaves that drop of during the winter to conserve water. The grasses have adaptations that discourage animals from grazing on them; some grasses are too sharp or bitter tasting for some animals, but not others, to eat. The side benefit of this is that every species of animal has something to eat. Different species will also eat different parts of the grass. Many grasses grow from the bottom up, so that the growth tissue doesn’t get damaged by grazers. Many plants of the savanna also have storage organs like bulbs and corms for making it though the dry season.