I had this Iris for one year, 2 years ago - when the flower photo was taken. It didn't survive but I now have a new tuber from my sister's garden in Leeds where it does very well. If at first ... etc. Knowing what it is might increase my chances. The base of the leaves is blue as seen on the new tuber. Any help gratefully received. I think it could be some hybrid of Iris virginica/versicolor.