Perennials » Perennials » Perennials Q-Z » Tradescantia 
Vigorous, long-blooming plants form compact clumps of narrow, rush-like, blue-green foliage. From early summer until fall they produce clusters of showy, one inch 3-petaled flowers that dissolve neatly away by the end of the day. Adapts to sun, shade, moist and dry conditions.