switchgrass
Panicum virgatum 

Hardiness: Zones 5 to 9
Plant type: Grass
Height: 3- 6'
Spread: 2- 3'
Sun: Full sun to part shade
Water: Medium to wet
Bloom time: September to November
Bloom color: Pink to pinkish-red
Soil: Tolerates a wide range of soils, including dry, poor ones, but prefers average, moist, sandy or clay soils.

Notes: Birds feed on the seeds over winter.

More information on this plant here.