Posted: 05/03/2015 at 07:57
Thanks Dave, you just get more and more dead leaves over the years and they don't pull off easily like most dead leaves. Maybe that's all non-bulbous irises, the pseudocorus have very tough dead leaves as well.
Mine had a hair cut 2 years ago when we painted the outside of the house and they look better for it. I don't want to weaken the plant by doing it too often.