The climate is temperate and humid, with a mean annual temperature of 45 to 55 degrees F., and mean annual precipitation of about 40 inches. These include the competing Cardiff and Mt. Airy series and the Chester , Edgemont , Elioak , Glenelg , Hazel , and Manor soils. Chester, Edgemont, Elioak and Glenelg soils have argillic horizons. Hazel and Manor soils have less than 35 percent coarse fragments in their particle-size control sections. Runoff is medium.
Permeability is moderately rapid or rapid.
Native vegetation is dominated by black oak, yellow poplar, and dogwood, with Virginia pine and shortleaf pine. The series is of moderate extent. Bucks County, Pennsylvania, 1941. Dystrochrepts feature - strongly acid to very strongly acid reaction in the zone from approximately 10 to 30 inches.