Stachys byzantina and cvs.
(Lamb's ears, Woolly betony)
This mat-forming perennial has rosettes of furry, silvery-gray leaves to 4 inches long. In summer, it bears gray spikes tipped with tiny, pink-purple or violet flowers. This plant crowds out weeds. 'Silver Carpet' is a non-flowering cultivar. 'Big Ears' has 8- to 12-inch-long, grayish-white felted, mid-green leaves.