It’s nearly the end of February, there is still frost at night and some of the plants look shabby… Before I can see where the weeds are, I need to ‘tidy up’.…
They are frost to half hardy, but in cool areas might need a little protection. They will require full sun and fertile well drained soil. In cool areas all except C.sieberi need protection of a south or west facing wall.
Propagation is by semi-ripe cuttings in the summer or by seeds in the autumn or spring.