Lady's mantle is most commonly used as a mounding ground cover planted in mass under trees or other difficult areas of the landscape. A mass planting of lady’s mantle is very eye-catching when in bloom but largely loses its impact after flowering. Lady’s mantle makes a nice contrast for bright daylilies and roses that bloom at about the same time. It's especially attractive when contrasted with pink and purple foliage. Remember that it can take two years for new plants to bloom.