Berberis julianae is very similar to B. darwinii: the latter has darker flowers on longer stalks, so that they clearly form hanging bells. B. julianae flowers slightly earlier for me, which seems to be the opposite of what the books say. But plants can't read, and don't always follow instructions anyway. Although the tiny flowers are striking, it is the way they combine with the small percentage of leaves which turn red that really lifts this evergreen shrub into a class of its own. Furthermore there is a shiny healthy quality to the shrub in all seasons - and its thorns make it good for security. All in all Berberis offers a great range of species - low-maintenance, yet appearing well-groomed.