I love that white one! Is this the first time this rhizome has grown, in other words, the first year you've had it in flower? If so, the plant was simply mis-labelled and you bought a white one, not the one it said on the label.

If you've had the correct flowers from it before, that's a bit different... either way, it hasn't been to heaven - things don't come back from there!

It's been in the ground for 3 years, but this is the first year it bloomed. I suspect you are right. It's not a pure white - I see faint traces of what I was hoping for. It does look very rich, so I'll keep it.

They are both desirable irises though, so enjoy!