Why are my passionfruit vine leaves turning yellow with rust spots then they fall off?

Hi Doug,

impossible to pinpoint exactly without seeing the symptoms, passionfruit don't really get rust. It could be a fungal problem and a spray such as mancozeb may help. However these problems usually occur when other factors such as poor nutrition, lack of water or bad drainage are present. Take a leaf in a sealed plastic bag to your nursery horticulturist to see if it is a fungal spot. would suggest looking at fertilising and watering details and apply some seaweed tonic.

From your friends at Yates Gardening