How to Propagate hydrangea 'Taiwan'?
Propagate by softwood cuttings in early summer or hardwood cuttings in winter

hydrangea 'Taiwan' · Hydrangea aspera 'Taiwan'
Grow in moist but well-drained, moderately fertile, humus-rich soil in sun or part shade with shelter from cold drying winds; may become chlorotic in shallow chalky soils
Propagate by softwood cuttings in early summer or hardwood cuttings in winter