re My purple Iris turned white faq
I was looking for an answer to why my Daffs changed color this year and I ran across an article which said that Irises may change from purple to white if they're stressed on transplanting by being left out in the sun too long.
There's a faq on the changing color topic but the above reason isn't listed as one of the possibilities (unless I didn't read carefully enough), so I thought I'd post this additional info.
Doesn't help me with my daffs, but maybe helps someone else.
Have a nice day everyone!