My grandmother grew a lot of irises, I particularly remember the Siberian Iris. Once she gave us some divisions of Bearded Iris and we planted an Iris bed. It was successful for a few years until it became infested with Iris borers. I remember trying to dig the fat white grubs out of the rhizomes. yuk! They are still one of my favorite perennial flowers, and fortunately I have not seen another Iris borer in many years.