Some hardwood trees grow here, along with a variety of native grasses. These soils are divided into several subgroups. Common vegetation includes small trees, shrubs, cactus, weeds and grasses. Soil types include sandy loam, clay and clay loam. About 24 million acres of rolling to mountainous terrain, from woodlands in the west to prairies in the east.
Vegetation includes a combination of grasses, weeds and small trees.
Soil composition is limestone-based and shallow. Upland soils are dark, calcareous clays and clay loams, mostly gravelly and stony. Bottomland soils include areas of dark, calcareous, clayey alluvial soils. The area is half mesquite woodland and half prairie. Soils range from coarse sands to tight or compact clays.