Resinone's Garden
Elderberry Black Lace
Genus: Sambucus.
Species: Sambucus Nigra, Black Lace..
If you are growing the plant for its foliage alone, then you can give it a hard prune in early spring, but if you want it to produce flowers as well, then once established, you should cut down half the stems (the older ones) to ground level in winter, and then shorten the remaining stems by half.
Answered on 20/7/2016 by Helen from crocus
http://homeguides.sfgate.com/prune-sambucus-black-lace-tree-48556.html
