Setcreasea pallida, or Purple Heart, a native of Mexico, is named for the striking purple color of the plant in full sun. Drought tolerant. A wonderful choice for hot dry conditions. Makes an excellent ground cover and looks stunning when paired with yellow lantana or pink vinca..
Oxalis Purple Clover (Purple Shamrock) has exquisite heart-shaped leaves and is easy to grow and take care of. But should you forget to water, it will revive itself via tiny bulbs that can go dormant in the soil. May be hazardous to pets.