Arlene, I'm so happy you've joined in! Your garden is one of the most magnificent I've ever seen photos of!
Those Louisiana Irises do travel don't they! I've only tried 3 varieties, but I have found them to be care free- they thrived and bloomed their hearts out even during the neglect years completely enveloped by weeds.
I think I'm also just a bit too far north for Dutch Iris to return, and I surely wish that wasn't the case. Odd to me that they survive that first winter with no issues, but out of a dozen, one might show up the 2nd year. They're so easy to stick little clumps here and there among other plants, and are gorgeous. But I'm too cheap to treat them as annuals, so I'll enjoy yours Leslie