Carex crinita 
Fringed Sedge is a delightful ornamental grass that forms large upright clumps and is an excellent plant for erosion control.
 
This wetland sedge can be used throughout the garden to draw the eye with its fountain-like hanging seed heads, which also provide a perfect snack for birds. One of the tallest sedges, the leaves of Carex crinita reach 2-3 feet in height, with the seed stalks growing another foot taller.
 
While C. crinita is widespread throughout the eastern United States, it is considered a plant rarely found in the wild in Massachusetts.
 
Source: grown from seed originally from Toadshade Wildflower Farm, New Jersey.