Another reason to acquire white irises is to use them in a Moon Garden. I have one white one, 'Arctic Express', and one white with lavender interior, 'Hidden Surprise', at the entrance to my Moon Garden.
('Hidden Surprise' is in the foreground, 'Arctic Express' is in back. This picture was from 2012 when we had just revamped the other plants, so not much else but the iris was in bloom at this time.)
I also have potted 'Nordica' and 'Immortality' which I want to add to this garden , but I have yet to place those.
(While it is true that the interior of 'Hidden Surprise' and the beard of 'Nordica' have colors other than white, I have found that
little splashes of color, as well as the pastels of "near white" (not really) daylilies and the soft yellow or chartreuse foliage of certain licorice plants, enhance the daytime beauty of the Moon Garden.)
