Carex pensylvanica is native to open woods and thickets in the eastern half of North America. It has a fountaining habit with soft, delicate, arching, semi-evergreen leaves, reaching a height and spread of 6 to 12 inches. Insignificant flowers appear at the top of rough stems from April to July, and the foliage turns sandy tan in the fall. Its leaves provide cover for birds that also feed on the seed. It is a great pollinator plant, supporting several caterpillar species. This sedge is attractive when used as an underplanting for ferns and other low-growing shade perennials such as blue-eyed grass (Sisyrinchium angustifolium), wild geranium (Geranium maculatum), eastern woodfern (Dryopteris marginalis), and sweet woodruff (Galium odoratum).
This Carex is easily grown in average, dry to medium, well-drained soils in part shade to full shade. It will tolerate more sun if it is not allowed to dry out. It prefers loose loams in dry soils in sun-dappled part shade. Plants spread by rhizomes. Plants may self-seed in optimum growing conditions.