General Culture:
Easily grown in average, medium, well-drained soils in full sun to part shade. Prefers sandy loams. Winter hardy to USDA Zone 6, so it is advisable to grow this vine in a sheltered location with a winter mulch in the St. Louis area (Zone 5b to 6a).
Noteworthy Characteristics:
Codonopsis is a perennial, twining vine in the bellflower family. It typically grows to 10-15' tall but dies back to the ground each winter. Features greenish, nodding, bell-shaped flowers (to 1.25" long) with pale bluish-purple shading on the outside and with violet spotting and/or striping inside. Blooms in late summer. Elliptic-ovate green leaves (2-3" long) are clustered at the branch ends. Roots of this Asian native vine are commonly used in Korean cooking. Plants in the genus Codonopsis are sometimes commonly called bonnet bellflower.
Problems:
No serious insect or disease problems.
Uses:
Perhaps best woven through large shrubs. May be grown on trellises in somewhat the same manner as clematis.
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