Oktibbeha soils are acid and clayey throughout. They have red subsoils and light-colored surface layers. The clayey soils contain a large percentage of montmorillonitic clays and they shrink and crack when dry and swell when wet. The area is level to undulating. Elevation is about 200 feet.
Soybeans is the main crop.
Most of these soils are used for timber production and pasture. The area consists of the Upper and Lower Coastal Plains. Smithdale, Luverne and Savannah soils are extensive in the Upper Coastal Plains. They have either loamy or clayey subsoils and sandy loam or loam surface layers. Savannah soils have fragipans.