How to Propagate Japanese hydrangea vine?
Propagate by layering, softwood cuttings or semi-ripe cuttings

Japanese hydrangea vine · Hydrangea hydrangeoides 'Quelpartensis'
Grow in moist but well-drained, humus rich soil, in sun or partial shade with shelter from cold, drying winds and from late frosts, which may damage young leaf and bud growth. See climbing hydrangea cultivation for detailed advice
Propagate by layering, softwood cuttings or semi-ripe cuttings