How to Propagate Japanese water iris 'Returning Tide'?
Propagate by division of rhizomes from midsummer to early autumn

Japanese water iris 'Returning Tide' · Iris ensata 'Returning Tide'
Grow in moist to wet, deep, humus-rich, acid soil; it thrives at the margins of ponds or streams
Propagate by division of rhizomes from midsummer to early autumn