Teucrium ( germander) is a genus with some very different looking species. Teucrium cossonii majoricum is a low growing groundcover with grey foliage and whorls of mauvey purple flowers that smell like honey. T. x lucidrys (formerly T. chamaedrys) has dark green, toothed leaves with pink flowers. It grows to about one by two feet. T. fruticans is a shrub that can reach eight feet and has silvery leaves and lavender flowers. ‘Azureum’ has darker, more violet flowers. All will tolerate poor soil and need only moderate water.