The addition of sedges in a Native Wildflower Garden adds a whole new dimension. These are not grasses. Grasses have round stems, sedges have triangular-shaped stems. Remember, "Sedges have edges."
Sedges are mainly found in shady wet areas -- the woods, but they exist in all habitats. They generally flower early, have interesting seedheads and don't change color in the Fall.
Seen here is the Common Burr Sedge, Carex grayi.