I introduce my medians through Winterberry Iris. Their growing area was great for iris when I lived in MA. I have brought for our iris club from them as well as Mid-America, Keith Keppel & Sutton. Also Aitken's Salmon Creek Garden. Scheiners also has lovely plants, but for my hybridizing use, the fact that one has to wait to find out the background is not helpful. They don't post parentage. But they are posting more SDBs from former years.