When my mother-in-law passed in 2003, we inherited her small cottage on a lake. She had planted there several irises. We don't get to visit the place but once a month during the summer to cut the grass and nothing has ever been done to the irises and they are thriving. Several years ago before I started to like irises, I tried digging them out and getting rid of them. No such luck, they all came back. So basically, they have really been neglected and when we do get a chance to see them bloom, they do very well. They are in a zone 4b garden and I am wondering if they are probably more of the historic type irises since they have been around for some time.
