japanese iris in this area
I suddenly want some japanese iris for my yard. But when I went to check things out at the iris forum, there seemed to be agreement that japanese iris (or JI as they call them in the iris forum) do not do well in zone 7. They have to be transplanted every 3 years or they become buggy, exhaust the soil and have other work-inducing downsides. However, I noticed that, although the complainers were zone 7, they weren't our zone 7.
So what has been the experience of people in this region with japanese iris?