No iris need to be cut back. Iris leaves are properly cut when transplanting to compensate for root loss.

As with any plant if the leaves are untidy - do what you need to do to make them look nice to your eye... but removing green foliage is never helpful to the plant.

Chadinlg, thanks for the information, it is appreciated. I just trimmed the tops a little to make them look neat, I just don't like a messy looking area. Thanks again.