National Council for The Conservation of Plants and Gardens
National Collection of the Genus Codonopsis and Allied Genera
Codonopsis rotundifolia var. grandiflora
A large vigorous twining climber with large shallowly toothed leaves with prominent veins on the underside. The typical campanulate bell is quite variable with green/slatey blue on the outside and blotched and spotted with maroon on the inside, but sometimes hardly at all. It is worth seeking out a good form. It seems to flower better in a well lit situation and will self seed if happy.
The seed is quite large and brown.