Does mosaic virus turn foliage yellow? I have a jumbo parsley plant in a patio pot where some of the stalks have gone completely blond like that. I was wondering what on earth could have caused it.
I'm not a smoker. I have heard it can be seed bourne, or spread by aphids. One of my neighbours also has mosaic virus on her courgettes. She's a non smoker too, I wonder if the weather favours the virus ?