It is named after the city of Casa Grande and the nearby Casa Grande National Monument, home of a large earthen building constructed by the Hohokam nearly 1,000 years ago.
The Spanish words “Casa Grande” mean “Big House.” The Native Americans used irrigation to remove excess salts from Casa Grande soils and raised cotton, grain, and vegetables on these productive soils, much as farmers do today.
The Casa Grande series consists of very deep, well-drained, saline-sodic soils on fan terraces and relict basin floors.
These soils formed in alluvium derived from granite, rhyolite, andesite, quartzite, and some limestone and basalt.
Series: Casa Grande Family: fine-loamy, super-active, hyperthermic Subgroup: Typic Natrargids Great group: Natrargids Suborder: Argids Order: Aridisols