'Guardian Angel' guards against shade landscape boredom with large, thick blue-green leaves displaying a white center that can light up any garden. Compact, dense clusters of light purple flowers rise above the foliage on stalks in mid-summer while each leaves white center mists over with a sprinkling of green color adding to the landscape excitement.
Cut back after frost. Low maintenance. Divide in spring every 4-5 years. Prefers a rich, moist, well-drained soil in part shade.