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

hydrangea 'Koki' · Hydrangea aspera 'Koki'
Grow in moist but well-drained, humus rich soil, in a lightly shaded spot with shelter from cold, drying winds. Mulch annually in spring. See shrubby hydrangea cultivation for more detailed advice
Consistently moist root zone, add extra water during warm dry weather