I've been growing seed-raised Black Passionfruit plants for sale for over a decade and the vast majority of my customers lament that they've grown a grafted plant only for the graft to die and the rootstock take over. The most likely rootstock culprits are Banana Passionfruit and an ornamental Passiflora - both can quickly become resilient weeds. The best way to avoid this is to grow seed-raised Passionfruit. For many years they were hard to buy but they're becoming more avai