Stachys byzantina 'Silver Carpet' lamb's ears.Rosettes of silver, greyish white leaves provide an attractive, weed suppressing carpet for much of the year. This variety of 'Lamb's Ears' rarely flowers and is an excellent, drought-tolerant groundcover or edging plant for a well-drained site in full sun. The foliage is a more intense shade of silver than flowering varieties of the plant.
Ophiopogon planiscapus 'Nigrescens' - This small, easy to grow, clump-forming evergreen perennial has strappy, inky purple, grass-like leaves. In summer, small spikes of bell-shaped, pale mauve flowers appear, followed by spherical, dark blue fruit. This unusual plant looks fantastic with other grasses, especially if grouped in tubs or planted into gravel, and it provides a brilliant contrast with silvery plants in sun, or bright green ferns in shade.