Official State Soil
The Official Texas state soil is "Houston Black." Houston Black Soil extends over 1,500,000 acres (6,100 km2) of the Texas blackland prairies. The soil is composed of expansive clays and is considered one of the classic vertisols. Houston Black soils are used extensively for grain sorghum, cotton, corn, small grain, and forage grasses. In their natural state, they support mostly tall and mid grass prairies of big bluestem, sideoats grama, switchgrass, little bluestem, and indiangrass, with some elm, hackberry, and mesquite trees thrown in for good measure. In the USDA taxonomic system it is designated an "Udic Haplusterts." The soil also shrinks and swells with variations in how much water it contains. Nowhere in the official description do I see the words "makes architects apoplectic" or "makes grown men cry," but I know these things to be true about it, too.
Beauty is only skin deep but Texas is to the bone.