White oil can be a good option for keeping pests under control. If your vine is mature and treated with white oil, it should bounce back and increase growth in the warmer months. For bigger pests such as possums and rats we recommend visiting your local hardware store or nursery to find out which product is best for you.
Many passionfruit vines are grafted, meaning they use the rootstock of a stronger variety to withstand disease. Prune off the suckers below the graft area and avoid ruining the root system. As a guide, our commercial growers replant every three years to ensure they get optimal fruit from a crop. Prune your vine back so that it is not in the way of other plants. The best time to prune is in spring as new growth resumes. Try cutting the base of the vine a few inches from the ground and spraying the vine with roundup or a similar herbicide.
This website is funded through the Hort Innovation Passionfruit Fund, using the Passionfruit marketing levy. Hort Innovation is the grower-owned, not-for-profit research and development corporation for Australian horticulture.
Privacy Policy. About » FAQs. Other factors such as cold weather, wind, rain and frost can delay flower and fruit set. Be patient. Pruning your vine to encourage new growth before flower onset is important too. Flowers grow on new growth. Prune early spring. In late winter and early spring it's time for a clean up. You don't have to prune hard every year. But in early spring take off about 30 centimetres - that's ideal.
One of the vines that Gardening Australia filmed suffered signs of stress. It had scale - insects that were sucking the sap and the life out of the plant. There was evidence the bark of the main stem was splitting, because it had been tied up, and there was some form of collar-rot at the base.
The poor old vine had to go to passionfruit heaven. The Panama Red - which is red skinned, has rather large fruit, and is also grafted. Both are good to grow in the tropics. In the olden days every passionfruit vine was planted on top of a lamb or sheep's liver, ox heart, or some other piece of offal, to provide iron. Stick it at the bottom of the hole, cover it up a little bit, and then plant the passionfruit as normal.
Use pelletised flower and fruit, a citrus food or a chicken poo fertiliser. Water plants well before adding fertiliser then spread it around the base of the stem and along the area where the roots are growing.
After feeding in spring, spread organic mulch such as compost or aged cow manure 2 to 3 centimetres deep. Many passionfruit are grafted plants. From time to time the understock the root system your vine is grafted on to starts to grow. It can out grow the productive vine and become weedy. Always remove suckers from below the graft area and avoid damaging the root system as this can encourage suckering. The best time to prune is in spring as new growth resumes.
Avoid removing main stems, just cut back unwanted twining stems. If the vine is established and well cared for it should begin flowering in spring and continue into autumn. If there are flowers but no fruit, try hand pollinating the blooms using a small dry paintbrush or a cotton bud to transfer pollen from stamens to the stigma.
Repeat this regularly until you see fruit forming. You can also try planting flowering annuals or herbs around the area to entice pollinators into your garden.
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