Could it be you did not plant what you paid for? Happens all the time

No, they came up the next year. ('15) Pretty different colors. '16, all white. '17 different colors, mostly white. ???

Wow, don't have a clue, then

Yes. I have only a couple colors bloom when there used to be others. Is it cross pollination? Or maybe the fancy ones succumbed to the others? I may try to transplant the fancier ones this year to better places and see what happens. I scatter lime, sometimes phosphorus, don't know if it helps. Thought the lime would get rid of moss. It didn't--those didn't bloom. This year there were many irises blooming around this neighborhood, which had not in years.

And I know those others had no help--some are growing in tall weeds. There was a lot of rain last year. Especially Summer except August, up until January. Maybe they need water when dormant or before or after? I don't know what zone you're in. I think they must like water, unlike what I have heard.

I think Bearded Irises are one of my greatest conundrums. I used to have a white which took 3 years to bloom and smelled like vanilla. Unfortunately I shared it, thinking it was purple, and she said it never bloomed but once in white, but never again, when I asked for a division, she said she didn't know which one it was. Do yours smell like vanilla?

There is no fragrance at all. I'm in zone 7. I also have reblooming irises that don't rebloom.

To "bossyvossy" & "andreap". In case you are still wondering about the irises changing color, I found a site that has explanations for that and other problems.

http://www.wilsonjh.org/irislfaq.htm#howplant

I guess if you hunt around you can find almost anything on the web. Thanks for your responses.

Pjr644, interesting link. Personally I've not experienced color change. One thing I've always wondered about is soil effect on coloring. If it can affect hydrangeas, why not other flowers? Thinking about roses, DLs, etc

Thanks for the link--very informative!