Vinca major, the Common Periwinkle. NOT related to the bedding plant vinca that looks like an impatiens. PerennialGroundcover, trailing plant. Somewhat drought-tolerant when established, takes a wide range of conditions in stride. Looks best in partial shade. There is also a smaller-flowered/leafed version (Vinca minor) and a beautiful variegated-leafed type, 'Vinca major 'Variegata'
