Thermopsis caroliniana, also called T. villosa and "False Lupine", is a native plant of the eastern United States. Its cheery sulfur-yellow, pea-shaped blooms appear on sturdy stems from May to June.
Thermopsis caroliniana False Lupine is very similar is appearance and habit to Baptisia ("False Indigo"). It thrives in full sun and fertile, well-draining soil. It is drought-tolerant once established. Mature False Lupine resents root disturbance, so site it carefully to avoid the need to transplant.
This sunny native would be very at home in cottage and pollinator gardens.