Passiflora quadrangularis is a fast growing vine, arising from a fleshy root that enlarges with age, and can climb to a height of 40 Ft. It produces showy flowers to 5-6inches in diameter with red petals and the purple and white rays.
Fruit of the giant granadilla are large, reaching of up to 12 inches in length and turning yellow when mature. The pulp around the seeds is used to flavor ice cream and to make a cooling drink. In addition, the flesh of this fruit is edible. The green fruit is boiled and eaten as a vegetable. The fully ripe flesh is eaten alone or in combination with such fruits as papaya and pineapple. Best for zone 9b-11.
The giant granadilla grows well over a variety of soil types, but might suffer micro-nutrient deficiencies on highly alkaline soils. It benefits from annual pruning to control its size and to produce young juvenile wood which produces more flowers and potential fruit. It should not be allowed to grow on any tree since it will compete aggressively for space in the sun, and it might damage or kill its support. The granadilla passion vine has few pest problems.