[u]Passionfruit[/u]
High requirement for potassium. Apply potassium-enriched compost or sulphate of potash before flowering and during fruit development.
Apply a complete organic fertiliser during spring and late summer.
Yearly applications of dolomite lime can be used to make adjustments to soil ph and provide magnesium and calcium.
Pollination problems can be caused by overfertilising with high-nitrogen fertilisers.
A story I got told is the Queen’s passionfruit are planted over a dead horse. Putting a liver in the hole they are to be planted in works well.