This is Dalea foliosa, also known as Leafy Prairie Clover. This shrub grows up to 2 feet tall, and likes to live in full sun to partial shade. Dalea foliosa attracts bees, butterflies, flies, and wasps. Leafy prairie clover is a larval host plant for the Marine Blue, Reakirts Blue, Clouded Sulphur, Orange Sulphur, and Southern Dogface butterflies. USDA Hardiness Zones 3 to 8.