Description: Clusters of pale blue flowers borne on 3-foot stems; dark green, peach-leaf foliage turns yellow in the fall
Habit: Grows up to 3 ft high and wide, vase-shaped
Culture: Prefers full sun to light shade and rich, well-drained garden loam; established plants are deep-rooted and drought resistant, requiring little care
Hardiness: USDA Zones 3 through 9
Origin: North America
Attributes: Fall color, drought tolerant, deer resistant.
This choice North American native was discovered in 1759 and named for Charles Amson, an 18th-century Virginia doctor and scientific traveler. Blue Star was likely not cultivated as a garden plant until the mid-1800s, but was recommended by Peter Henderson by the end of the century. It has since become a popular flower for the perennial border and the cut-flower garden. zone3,zone4,zone5,zone6,zone7,zone8,zone9