What Are the Moisture Requirements for Japanese water iris 'Rowden Caesar'?
Poorly drained · Moist but well drained

Japanese water iris 'Rowden Caesar' · Iris ensata 'Rowden Caesar'
Grow in moist to wet, deep, humus-rich, neutral to acid soil in sun or part shade; it thrives at the margins of ponds or streams
Poorly drained · Moist but well drained