I am such an amateur.
I got mine from Edelweiss Perennials as well. The owner described it to me as the iris most likely to survive dry shade, this has proved true. I like the flowers, although in shade they were sparse, as he said they would be. Last winter the huge pine tree it was under was cut down. The iris survived being buried in sawdust, it came back perfectly healthy although no blooms this year. It grew a lot more than I would have expected, I bet it likes the sun. Next year when it blooms I will photograph it, I never looked at the flowers closely.
Have you asked Urs (owner of Edelweiss) about the provenance of his plants? He strikes me as a careful person, and a real plantaholic. He is quite the plant breeder. He might be able to tell you something useful, like who he got it from.
