These climbers bear the largest flowers of all codonopsis, each flared sky-blue star having a central eye, delicately pencilled in violet and mauve, and being up to 2 inches (5cm) wide or more. Unusually, the individual flowers on the vine can vary tremendously in size. These superb plants are tuberous herbaceous perennials that can twine to a height of at least 3m when mature, the tubers usually flowering in their second or third year from seed.
Seeds can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.
Packet Content:20 (Approx)