I have several Concha. Lovely shrub. Every year I take a few cuttings.
Mine got trashed by the cold easterly winds this winter, was fine right up till then. It still has some green bit, but alot is brown. Think i'll chop the brown and hope it comes from below as it's only young (2 years) so might do. I like them alot, and particularly because they are bee tastic, but i won't be getting another till the garden establishes, leason learned they are not good pilgrim plants, mind you even my pyracantha which are supposed to be hard as nails got a hammering this year.