Dark red flowers with thin yellow petal edges make Potentilla Arc-en-ciel a vivid choice for the front of a summer border. The compact perennial forms a low mound of green, strawberry-like leaves and also fits edging, gravel gardens, and containers.
Grow it in full sun or partial shade in moist but well-drained soil. Remove spent flowers to encourage continued bloom, then cut the stems to the ground in late winter or early spring. Its fruit is ornamental and should not be eaten; wear gloves when handling.