How to Propagate hydrangea 'Dark Angel'?
Propagate by softwood cuttings

hydrangea 'Dark Angel' · Hydrangea macrophylla 'Dark Angel'
Also known as: hydrangea 'Dark Angel Purple'
Grow in moist but well-drained soil in sun or partial shade. See shrubby hydrangea cultivation for more detailed advice
Propagate by softwood cuttings