Iris Pallida has worked so well this year. --Incredible increase, nice flowers, and seems not to need division to get bloom.

Are there other iris with these characteristics?

So many of my modern hydrids rot, stop blooming, or decrease.

Nevertheless, the non-variegated sweet iris have done so well I am looking for similar iris.

Do an image search on Google or Yahoo, if you would like a picture of sweet iris.