Switch grass was an important part of the north American environment providing an important food source and winter shelter for a range of insects, mammals and birds. Bitter switch grass like this was an important part of coastal ecosystems throughout the eastern and southern parts of the US.

Dewey Blue bitter switch grass is an upright grass of about four feet in height and about three feet in width. The foliage is a characteristic grayish-blue which persists throughout the winter months if the plant is not cut back.

Like most switch grasses, Dewey Blue is extremely versatile and can cope with a range of soil types from sandy to wet and shade conditions although it prefers full sun. Because of its versatility it can be used in a range of conditions such as rain gardens, stabilization of eroding banks, and black walnut. Since Dewey Blue is mostly grown for its ornamental value, it is generally retained for its autumn and winter interest. Cut back the foliage to near ground level in late winter.