A great choice for speed of growth and tolerance of dry shade is Bugleweed or Ajuga reptans. Best suited to areas of lighter shade at the edge of woodland or shrubby borders, this creeping, leafy perennial spreads via roots to form a mat of attractive leaves that range in color from dark maroon to light lime green. The bright purple flowers in spring are also attractive. It can become invasive, so choose wisely. Varieties include smaller leafed ‘Chocolate Chip and larger types such as ‘Catlins Giant’ which look good combined together or with other shade-tolerant plants.