Tradescantia bracteata

A shrunk-down, relatively well-behaved spiderwort from the central U.S., with violet-blue flowers on foot-tall, grassy-leaved stems in late spring and early summer.  Excellent subject for dry sunny locations.  Zone 4.  Propagated from seed.  Deep 3.5-inch pots.  Photo: USFWS Mountain-Prairie

Sun; light soil; 1'x1'; late spring to summer