The color of Trifolium Dark Dancer is somewhere between chocolate and dark purple. This variety of white clover is a good edging plant or ground cover and is hardy in zones 4-10. A Dark Dancer Trifolium plant in a 4.5-inch pot is $7.95 from Easy to Grow Bulbs.

Lysimachia atropurpurea Loosestrife HardyPerennial A superb border plant with silver- green lanceolate foliage and many spikes of claret-red, almost black florets – a highly unusual colour in perennials. May also be used in containers or as a cut flower. Flowering Period:June, July, August Sowing Months:February, March, April, May, June, July Position:full sun, sun or semi shade