Well, I stuck about 6 prunings of my sambucus Black Beauty into a pot early in the spring and 2 of them appear to be growing. That's outside and without any further attention apart from watering occasionally in the dry spell, so I should think with TLC you'd have greater success but the experts will be able tell you, for sure!

Pennyfarthing has hit on the easiest method--hardwood cuttings, taken in cool to cold weather. Rooting hormones will increase the success rate, but aren't really necessary.