Seasonal jackfruit is native to Southeast Asia and is a staple in the tropical, humid environment. Jackfruit is a large fruit that can grow up to 3 feet long and weigh between 4 and 40 pounds. It's also one of the only fruit that ripens on the tree, meaning it doesn't need to be picked ripe and can be eaten raw. A jackfruit has a light green skin and white, yellow or purple flesh.