Berkshire soils are gently sloping to very steep soils on glaciated uplands. Slope ranges from 3 to 75 percent. The soils developed in stony till of late Wisconsin age, derived principally from acid, gray to black or olive mica schist with some phyllite, granite and gneiss. F. Mean annual growing season ranges from 90 to 160 days. These are the Hermon , Lyman , Monadnock , Peru , and Tunbridge soils.
Hermon soils are sandy-skeletal and are somewhat excessively drained.
Lyman soils are shallow to bedrock and are somewhat excessively drained. Monadnock soils have sandy substrata. Peru soils formed in dense till and are moderately well drained. Tunbridge soils are moderately deep to bedrock. Permeability is moderate or moderately rapid.