| A | B |
| Choppy Sands | 20% Slope / Sandy Soil |
| Clayey | Very limited water & root pentration |
| Limy Upland | Abundance of lime in topsoil |
| Saline subirrigated | Water table at 10-60 inches / Salty or Alkaline soil |
| Sands | Sandy soils / < 6" Dark topsoil |
| Sandy | Sandy soils / > 6" Dark topsoil |
| Shallow | < 20" of soil over rock or gravel |
| Silty | Topsoil & subsoil very fine sandy loam to silty clay loam |
| Silty Overflow | Silty soil / Receives water from above |
| Subirrigated | Water table at 10-60 inches / Limy soil |
| Thin Loess | Silty soil / Steep with catsteps |
| Wetland | Water within 3 feet year-round |