This is Amorpha canescens, also known as Lead Plant and Prairie Shoestring. This attractive butterfly plant must be grown in full sun and will bloom from late Summer until early Fall where it will attract several pollinators and countless birds, bees, and butterflies. Leadplant is the larval host plant to the Southern Dogface and Gray Hairstreak butterlies. USDA Hardiness Zones 2 to 9.