Mystery Iris disease
I seem to have a problem with my heirloom irises. I don't know if it is a virus or what, but it affects only the flowers, making them small with no area to the petals. The leaves and rhizomes are fine. I've never seen anything like it. All blooms on a fan are this way and so far it has appeared in two different varieties. It isn't widespread. So far I have only three affected plants, but these are widely separated and I am very concerned. Has anyone got a clue as to what this might be and how I might combat it?
Here is a link to a photo:
Any help would be appreciated. Thank you.
Here is a link that might be useful: Iris disease?