Michigan State University Extension
Ornamental Plants plus Version 2.0 - 00000269
01/01/98
Hardiness Zones: 4 to 10 Height: 18 in Spacing: 12 in Type: herbaceous perennial Flowers: Blue
Comments: The clusters of blue flowers are produced in the summer. The scientific name refers to the round basal leaves.
Cultivars:
'Marchsetti' - Light blue flowers that are almost white
on the inside.
'Olympica' - Bright blue flowers about an inch long.
References for Cultivars: Walters Gardens 1997, Wayside Gardens 1996.