My Nellie Kelly passionfruit has been a pathetic vine ever since I planted it. It is always sick and yellow looking no matter what I do to look after it. So last year I made a last ditch effort and decided to grub it out if it failed to fruit.
I read all about passionfruit and subsequently fed it with chelated iron and seaweed fertiliser and amazingly, it responded. I have just had a prolific harvest and have thoroughly enjoyed eating, freezing and giving the fruit away. Chelated iron is the magic solution.