I haven't knowingly sown any passion fruit. I had seeds of a flat nectarine is this a possibility? I had seeds sown in a few different pots but thought they hadn't germinated. Otherwise, I honestly don't know what it could have been. It was almost two years ago. Plus the base has now started hardening also. A lot of the leaves dropped off a few months ago due to lack of nutrients, I re-potted a few months ago but it's not enough to sustain it. I'll need to find a larger pot.