This diminutive Prairie Spiderwort, native to the Midwestern states,  may be short in stature (to only about one foot), but it makes up for it with its lovely blue (sometimes rose) flowers with yellow anthers.  The colorful blooms are smaller than Tradescantia virginiana, which add balance to its shorter size.  Unlike most Spiderworts that I know, this one prefers sun and dry soil - its home is the prairie, after all.   It spreads by seed and underground rhizomes and will rebloom if cut back.  Deer resistant.  Zones 4-8.  Quarts.

like this perennial for three reasons: its bright chartreuse foliage that brightens even the darkest of days; its vivid violet blooms that open in the morning and close at day's end; and all of its various names - botanical, common, and, especially, "Sweet Kate." Tradescantia "Sweet Kate" grows to about 10 inches in sun or part shade in moist soils; it's a long bloomer, too. Zones 6-8. Quarts.

This native wildflower has dark green, bladelike leaves and blue/purple, three-petaled flowers. You can tell the time by their blooms that open when the sun hits them in the mornings and when they close in the afternoon. The clump-forming plants will reseed, and if you have more than one variety of Spiderwort growing close together, you can get some interesting color combinations. Spiderwort grows from one to two feet in sun/partial shade and moist soil in Zones 6-8.