Purple Hearts (Tradescantia pallida 'Purple Heart') has a very fast sprawling growth rate and is great for flower beds and groundcover! I have this in my flower beds and it is so pretty, grows fast and roots easily!
Purple Shamrock Plant (Oxalis regnellii 'Francis') Bright purple, triangular-shaped leaves and pink blossoms make this vigorous Oxalis a must-have for the container garden. The vivid purple color will amaze you! Grow in moist soil in
10 Black Flowers and Plants to Add Drama to Your Garden
Setcreasea pallida, or purple Heart, is named for the striking purple colour of the plant in full sun. A wonderful choice for hot dry conditions. Makes an excellent ground and looks stunning when paired with yellow lantana or pink vinca.