Hostas do best in light shade and well-drained soil. Vinca minor , or Periwinkle, is vinelike in growth, rooting as it creeps along the ground. It can be planted in sun or shade, but avoid wet sites and protect from winter winds. Periwinkle has lilac to blue flowers. Periwinkle usually fills-in an area rapidly after planting.
Many cultivars are available, with variations in both flower and foliage color.
Ajuga can grow in sun or shade, and reaches 4-6 inches in height. This plant has fairly shallow roots, and spreads via stolons. It's best to protect Ajuga from winter winds. Winter wind, full sun, and poor soil drainage can be problems. Some groundcovers may become too aggressive and get out of bounds quickly.