In late spring, Royal Purple False Indigo sends up bold spikes of rich violet-purple, pea-like flowers above handsome blue-green foliage, making a commanding statement in a sunny border. This is a plant that rewards patience — over a few seasons it matures into a substantial, shrub-like clump three to five feet tall and wide, anchored by the deep, drought-defying roots of a true Midwest native. Once established it practically thrives on neglect, content in full sun with little water and shrugging off deer, rabbits, and pests alike. After the blooms fade, charcoal-black seed pods rattle on the stems for late-season texture, and songbirds appreciate the seeds. With its sculptural form and longevity, a single plant can hold its place at the back of the border for decades. Plant it once and enjoy a lifetime of effortless beauty.