I have two dwarfs that are getting yellow spots/mottling on their fans. TBs located in other areas around my house show no symptoms. Any ideas as to the problem?
If you do an Image Google search on IRIS LEAF SPOT you may recognize it being the same as your dwarfs.
Thanks for the tip iris gal. The spotting is similar but not exact. While there is a chlorotic yellowing there is no browning either around the margins of the spots or in the middle. I don't know if that means it's something else or not.
There are two possibilities.
1.) Mosaic Virus, although typically Mosaic virus symptoms usually are streaks of yellow, and not spots. The only cure for mosaic virus to complete burn and destroy the plant.
2.) Round-Up/Weed-Killer Damage, has also been known to cause spots like that.
There was a small discussion about a similar problem several years ago: Yellow Spots on Iris, but the photo of it has since been removed.
I do have a couple of Iris with this trait now, although in the past, I have simply left it alone and it seems to do fine.
Thanks Carlos. I'll probably leave it alone, too, and just see what happens.