Took the i pad out just now. I'm surprised at what is going on out there on this wet, stormy day. Outside the Daphne is putting on one hell of a display, so…
They are fully hardy to frost tender, min 5-7C and will require humus-rich, well drained soil with sun or partial shade. If pot grown, in summer dry off tubers of all except C.purpurascens (which is evergreen and flowers in summer); repot in autumn and water to restart growth.
You can propagate by seeds, stem or root cuttings in late summer or autumn.
Pests, diseases or disorders
C.persicum and its cultivars are susceptible to black root rot. Under glass red spider mites and grey mould.