Boxwood is a classic hedging plant, but don't overlook the hedging possibilities of santolina, and lavender. Colorize your garden. Variegated leaves add color, texture and depth to a garden. Soliloquies in the garden. Other plants that work well in bed and border corners, or anywhere where a bit of height is needed, are chives and rosemary.
Ornamental herbs are great container plants that provide a great foil for flowering plants.
Try the furry-leafed Dittany of Crete, whose pendulous pink flowers cascade from the sides of containers. And the shrubby bushes of santolina add a focal point to any container. The smell of success. Gardening is all about maximizing potential. Adding scent to your garden adds yet another dimension.