Thank you Lucy for considering what may be wrong with my poor iris. However, it went limp while it was in the iris bed and I took it up and put it in the pot to isolate it from other irises. It has not gotten any better or any worse but it has not been in the pot very long. It is only the new leaves this spring that are limp. I can put it back into the ground behind the garden shed to see if that will help. That is a nursery area for plants but no irises are there. So far the only indication that something is wrong are the limp leaves.
