Wild lupine is one of the more quietly important native plants of the eastern United States, found from the coastal plain to the Great Lakes in acidic sandy soils and open woodlands where it fixes nitrogen and asks little in return. The blue flower spikes appear in spring and early summer on palmate-leaved stems one to two and a half feet tall, and the compound leaves remain attractive long after flowering ends. The name Lupinus derives from the Latin for wolf, reflecting the old and mistaken belief that the plants devoured soil nutrients; in fact they do the opposite, improving the ground through bacterial nitrogen fixation.

In the garden, wild lupine performs best in moist to dry acidic sandy loam in full sun to partial shade, though it is adaptable to other well-drained soils. It can be short-lived and may go dormant in summer heat, but it spreads by short rhizomes and self-seeds to maintain a colony once established. Scarifying seeds before sowing improves germination rates significantly. Worth noting: all parts of the plant are toxic to humans and pets, so placement near areas used by children or animals warrants care.