Octagon soils are calcareous within 40 inches and commonly are on more sloping areas. Surface runoff is slow or medium. Permeability is moderate. Mostly used to grow corn and soybeans. Winter wheat is the principal small grain.
Native vegetation is mixed prairie grasses, deciduous trees, and shrubs.
These soils are of small extent. Tippecanoe County, Indiana, 1990. S84IN15728, Purdue University.