Michigan State University Extension
Ornamental Plants plus Version 2.0 - 00001310
01/01/98
Hardiness Zones: 4 to 7 Height: 36 in Spread: 18 in Type: herbaceous perennial Flowers: Blue, purple
Comments: These hybrids should be grown in full sun and a well-drained soil. The flower spikes are produced during the summer and some cultivars may require support. The flowers may be used in fresh or dried arrangements. The plant will tolerate some heat and drought but will not survive wet soil in winter. In northern areas provide winter protection.
Propagation: Division done in the spring.
Cultivars: Many of these cultivars are also listed as S. X
sylvestris.
'Blue Hill' - Plants 18 inches tall produce deep purple
flowers.
'Blue Queen' - Plants 30 inches tall produce purple
flowers.
'East Friesland' - Violet-purple flowers are produced
by plants 18 inches tall.
'Lubeca' - Two-foot tall plants produced violet-blue
flowers.
'May Night' ('Mainacht') - Deep purple flowers are
produced by plants 18 inches tall.
'Rose Queen' - Rose pink flower on plants 24 inches
tall.
'Rose Wine' - Rose pink flowers on plants 18 inches
tall.
References for Cultivars: Walters Gardens 1997, White Flowers Farm 1997, Lake County Nursery 1997, Bailey Nurseries 1997, Wayside Gardens 1996, Ray Wiegand's Nursery 1997, Studebaker Nurseries 1998.