Lyn, the iris probably need to be divided. That is really easy to do, but it sounds like getting to them is the hard part! They are one of the easiest plants to grow, but do have to be divided once in a while. I can help you with that, if you ever decide that you want to do it.
My flower beds may have looked finished, but I never thought they looked all that great! I guess I just got tired of them too quickly. I was always changing things, and never perfectly happy for very long. For about 2 weeks every year, I was happy! My way of planting things wasn't always that smart either. I had a bad habit of planting things that needed a lot of water, next to things that hated a lot of water! I just crammed things in where they fit, not giving any thought to how big they would be when they grew up! So, it was always changing. I'd give the plants away after a couple of years when I got tired of them, and moved on to something else. Now that I have all this land to work with, I hope I can settle down my way of planting, but I doubt that will happen. I don't have neighbors here to give plants to, so I'll just have to make more flower beds!
