How to Propagate Hydrangea macrophylla 'Blue Bonnet'?
Propagate by softwood cuttings in early summer or hardwood cuttings in winter

Hydrangea macrophylla 'Blue Bonnet' · Hydrangea macrophylla 'Blue Bonnet'
Grow in any moist but well-drained soil in partial shade or grow in sun if soil remains reliably moist. See shrubby hydrangea cultivation for further advice
Propagate by softwood cuttings in early summer or hardwood cuttings in winter