Irvington, Leefield, and Tifton soils have plinthite in the argillic horizon. Lynchburg soils are better drained. Pelham soils have thick sandy A and E horizons. The water table is at or near the surface for 6 to 8 months of the year. Most areas are in forests, but a few areas have been cleared, drained, and are used mostly for pasture.
Native vegetation is cypress, blackgum, live oak, and water oak.
The undergrowth is water tolerant sedges and grasses. The series is of large extent with about 26,000 acres in Miller County, Georgia.