When planting, set the rhizome just below the surface of the ground so that the top is exposed and with the true roots spread out into the soil below. Water the new plants every second day for the first ten days then cut back to once a week. Note that this is for new plantings only. Established iris clumps do not require water other than what they receive from natural rainfall unless you are experiencing a long drought period.
Iris clumps should be dug up, divided and replanted every 3-4 years
