Low, woody, and built to sprawl. Groundcover shrubs bring the permanence and structure of woody plants down to ankle height, covering ground with evergreen substance where a soft perennial carpet would thin or die back.
Creeping blueberry runs flat. Vaccinium crassifolium ‘Bloodstone’ makes a dense evergreen mat five to eight inches deep, the trailing stems rooting and swelling into small woody burls wherever they touch ground, so a single plant knits outward year on year into a carpet. The leaves are thick and leathery and hold a semi-gloss, broader and rounder than the species runs, closer in texture to periwinkle than to anything most people picture when they hear the word blueberry. In winter the late-maturing foliage takes on a reddish cast and the stems darken to a distinct red, which is where the name comes from. This is a winter plant, not a spring one, and the color is the whole argument.
The creeping blueberry is the ground-hugging cousin of the fruiting kinds, a low, evergreen, native groundcover of the Carolina coastal plain that trades height for reach. 'Well's Delight' is a North Carolina State University selection from the southeastern corner of that state, named for the late Dr. B.W. Wells, the pioneering North Carolina ecologist, and set apart by small, shiny leaves even finer than the usual for the species. The botanical name crassifolium means thick-leaved, for the firm little evergreen leaves that line the trailing stems.
A native violet grown as much for the leaf as the flower. Viola walteri, Walter's violet, belongs to the violet family, Violaceae, and honors the British-born botanist Thomas Walter, whose Flora Caroliniana of 1788 was the first flora of the American Southeast. The prostrate blue violet ranges in the wild from Texas east to Florida and north to Virginia and Ohio, threading the floors of moist deciduous woodlands and shaded rocky ledges.
A tough, salt-defying seaside groundcover with a serious caveat. Vitex rotundifolia, best known as beach vitex, is a low, prostrate, trailing shrub of the mint family, native to the coasts of eastern Asia, the Pacific islands, and Australia, where the plant binds shifting sand along the shore. Rounded, blue-green leaves about two inches across clothe the running stems, aromatic and slightly spicy when crushed, and spikes of bright lavender-blue flowers open in late summer.
