Easily grown in dry to medium, organically rich to average, well-drained soils in full sun. Best bloom occurs in full sun, although plants will tolerate some light shade. Plants prefer consistent moisture throughout the growing season, with some tolerance for drought once established. Good air circulation is appreciated. Deadhead spent flowers to encourage additional bloom. Plants slowly spread in the garden by rhizomes.
60-90cm tall x 60-90cm wide
Zone 3 (-40 to -34° C)