29 October 2020 02:47 PM
Passionfruit are self-fertile, so there is no need to have two vines. We recommend you look at planting grafted varieties, as they're hardier and can be more productive. Ensure you feed with a fertiliser high in potassium in mid-spring to encourage flower and fruit set.
Try Yates Thrive Flower & Fruit Soluble Plant Food:
https://www.yates.com.au/product/garden-fertilisers/speciality-fertilisers/yates-thrive-flower-fruit-soluble-plant-food