Orange - 'Arnold's Blood Orange' - Citrange
The vibrant colour in a blood orange is actually a mutation from the parent Valencia. The actual colour varies greatly depending on climate and weather. All blood oranges require a chill period of 550 hours in spring to develop optimal colour. Fertilise regularly for optimal growth and fruit set. Blood oranges should be thinned annually for optimal air circulation.
All citrus trees need plenty of sun and good drainage, so a position in full sun in a raised garden bed is ideal. The roots of citrus grow close to the surface, so it’s best to mulch beneath the tree to avoid competition from other plants or weeds. Heavy feeders, fertiliser should be applied monthly to ensure they have nutrients available at all times. Apply blood and bone, dynamic lifter or a citrus fertiliser once a month, every month. Citrus will grow in all Australian climates. Use your Heat Zone (HZ) to determine the best varieties for your area.