Baptisia alba White Wild Indigo. This 2-4 ft., mound-shaped perennial holds its white, pea-like flowers in erect clusters. Velvety, trifoliate leaves turn from bluish-gray to black in the fall. A bushy perennial with smooth leaves and white or cream-colored pea flowers in stiffly erect clusters; stem covered with whitish bloom. Clusters of large, black seedpods often remain attached to the naked winter stems.