I have cut down a few of the Iris as the wind always seems to catch them and they fall out of the container because of the many roots they form and lay across the water surface. I have three or four good cuttings if anyone wants any. I can get more from the ones I have put back.
They are pretty plants for sure. Mine don't seem to be anchored terribly well as I often see one drifting in the centre of the pond... probably heron damage