How to Water Japanese water iris 'Ruby King'?
Evenly moist root zone throughout growth, never leave rhizomes in stale water

Japanese water iris 'Ruby King' · Iris ensata 'Ruby King'
Grow in moist to wet, deep, humus-rich, acid soil, plant rhizomes 7.5cm deep; it thrives at the margins of ponds or streams, but avoid winter waterlogging
Evenly moist root zone throughout growth, never leave rhizomes in stale water