Gorgeous purple-pink flowers with black calyxes stand out brilliantly against rich, glossy green foliage. Eye-catching additions to borders, landscape gardens, containers or raised beds. Flowers are sterile so they won’t seed, but simply bloom all summer long! Deadheading is not necessary, but you can trim plants to encourage more branching and increase the number of flowers. Plants are easy maintenance with average water requirements. Hummingbirds, bees and butterflies adore them.