How to Prune hydrangea 'Winter Glow'?
Routine pruning is unnecessary; shorten overlong shoots to fit the available space. Prune after flowering has finished.

hydrangea 'Winter Glow' · Hydrangea anomala 'Winter Glow'
Grow in moist but well-drained, humus rich soil, in 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
Routine pruning is unnecessary; shorten overlong shoots to fit the available space. Prune after flowering has finished.