National Council for The Conservation of Plants and Gardens
National Collection of the Genus Codonopsis and Allied Genera
Sturdy non climbing plant always the first to flower in our garden usually around the end of May.
The flowers are bell shaped of the palest blue with pale purple on the inside and a green base. The corolla is slightly wider than deep with quite recurved petals. As the flowers age they gradually increase in size. The whole plant reaches about 2' and as much again across.
The seed is brown and much finer than Cc cardiophylla and clematidea, both of which look superficially similar.
Northern Pakistan and possibly Afghanistan