The majority of the Philomont soils are cultivated and used for permanent pasture or row crops. A significant area has been developed for residential use. A small area is in woodland. Corn is the principle row crop. Fescue, orchard grass, and red clover are typical pasture mixes.
Native vegetation is upland hardwood forest with some bluegrass in open areas.
The series is of small extent. Philomont is a community in western Loudoun County. These soils were previously mapped in the Brandywine series. Mechanical, mineralogical, and chemical analyses for 21 pedons performed by Virginia Polytechnic Institute and State University staff.