Pruning Group 1 - prune after flowering as needed.
The cultivars from the Atragene Group originate mainly from C. alpina and C. macropetala. Most plants in this group, including cultivars not listed below, are relatively easy to grow, undemanding, and very hardy provided the conditions are right. They like well-drained soil and perform poorly in thick and waterlogged soils, but you can turn this to your advantage as they are ideally suited to growing in partial shade as well as in sun. The plants in this group grow up to between 2 and 4 metres and bloom in mid spring (at the end of March - May), sometimes with a second flush of blossoms in late summer. Bell shaped flowers turn into attractive fluffy seedheads.
Some of the best are listed below.
C. 'Albina Plena' - double white flowers. C. alpina 'Pamela Jackman' - deep blue or pale violet-blue flowers. C. 'Constance' - pinkish-red flowers, often semi-double. C. 'Markham's Pink' - semi-double pink flowers.
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