Carolina lupine
Thermopsis villosa

Hardiness: Zones 4 to 9
Plant type: Herbaceous perennial
Height: 3- 5'
Spread: 2- 3'
Sun: Full Sun
Water: Dry to medium
Bloom time: June, July
Bloom color: Lemon yellow
Soil: Clay-based, moist, organically rich soils, loamy, average well-draining soils, sandy, well-draining soils, acid (<7pH).

Notes: Cut the foliage back about a month after flowering and it may bloom again in fall.

More information on this plant here.