How to Water Hydrangea macrophylla 'Gerda Steiniger'?
Consistently moist root zone, add extra water during warm dry weather

Hydrangea macrophylla 'Gerda Steiniger' · Hydrangea macrophylla 'Gerda Steiniger'
Grow in any moist but well-drained soil in partial shade or grow in sun if soil remains reliably moist. See shrubby hydrangea cultivation for further advice
Consistently moist root zone, add extra water during warm dry weather