Description Southern FS has been cultivating farmers since 1931. That's when the predecessor companies to this locally-owned agricultural co-op began sowing the seeds of support for Illinois producers. It has operations in Alexander, Franklin, Hardin, Jackson, Johnson, Massac, Perry, Pope, Pulaski, Saline, Union, and Williamson counties in Illinois. Southern FS offers farmers a wide variety of products and services, from landscape planning to livestock feed and tractor fuel.