Appalachian sedge
Carex appalachica

Hardiness: Zones 3 to 8
Plant type: Grass
Height: 6"- 1'
Spread: 1- 1.5'
Sun: Full shade to part shade
Water: Medium
Bloom time: May, June
Bloom color: Aesthetically insignificant
Soil: Loamy, average well-draining soils, neutral (≈7)

Notes: Plants host Skipper and Satyr caterpillars and produce seeds that are eaten by turtles.

More information on this plant here.