At the type location, the mean annual precipitation ranges from 40 to 48 inches, mean annual temperature ranges from 66 to 69 degrees F, and Thornthwaite annual P-E index ranges from about 62 to 74. These are the competing Conroe and Depcor series, and the Annona , Boy , Gunter , and Redco series. Annona soils have loamy surface layers, COLE of more than 0.09 and montmorillonitic mineralogy. Boy and Gunter soils have sandy surface layers more than 40 inches thick and loamy Bt horizons. Redco soils have gilgai microrelief and intersecting slickensides.
Small areas are used for pastures or cultivated crops, main are in forest.
Native vegetation is loblolly and shortleaf pine, red oak, and other hardwoods. Southern coastal plain area of Texas. Series is of moderate extent. Walker County, Texas, 1975. A study of the type location and a number of other areas mapped as Huntsburg showed that the soil contained less than 5 percent plinthite.