Sherry, it looks like fun, but also looks like a lot of work !...and it can only be done if you start
out with iris in pots, I imagine. I never do that. They're in the ground within a day or two of
receiving them. Consequently , I have a big beautiful mix! Lots of surprises. I do put the dwarfs. other shorties, and
intermediates up front or in a separate bed.
The day may come when I need to do more dividing, and then I'll know what I've got, and I can design the beds.
Good luck with your plans!
That's a magnificent table!