A friend of mine asked for help identifying the disease on some of his plants. (OK, all you folks from down south, I now expect a round of "why do you bother with those, we throw them away")
He brought home a few water hyacinths. They were supposedly doing perfectly fine in the pond from which he got them. He says that within just a couple days, the leaves began to turn white and all growth stopped.
Here's a photo of the dwindling plants:
Given the variegation (especially that on the two-tone leaf), I thought this might be a virus. Does anyone out there have any other ideas?