Thanks, Pat. I think Lin is right - your iris is lovely, but it isn't Studena Vlna. SV is an Anton Mego iris; I've grown quite a few of his over the past years and really like their originality and health. I think that Mego irises are now available in the US from Sutton's Iris Gardens (and increasingly difficult to find in Europe!)
Lin, we grow tall bearded irises in our place in France, zone 10a. I have found that if I plant them where they have shade for most or part of the day, with a couple of hours of sun, they do very well. Perhaps worth a try?