Streptocarpus leaf spots
I'm stumped. I am wondering what you all think about this leaf mottling?
For your reference, this plant is watered only when dry (very dry), is not often fertilized (with a liquid feed), but is potted in Promix with about a tablespoon of osmocote.
Oh, and when it is watered, the leaves do not get wet.
Could it be some type of mosaic virus? or water temperature?