How to Water hydrangea 'Bläuling'?
Consistently moist root zone, add extra water during warm dry weather

hydrangea 'Bläuling' · Hydrangea macrophylla 'Bläuling'
Grow in moist but well-drained, humus rich soil, in a lightly shaded spot with shelter from cold, drying winds. Mulch annually in spring. Soil additives may be required to maintain specific flower colours; blue colours are best maintained by growing in acidic soil or ericaceous compost. See shrubby hydrangea cultivation for more detailed advice
Consistently moist root zone, add extra water during warm dry weather