A pitaya /pᵻˈtaɪ.ə/ or pitahaya /ˌpɪtəˈhaɪ.ə/ is the fruit of several cactus species indigenous to the Americas. Pitaya usually refers to fruit of the genus Stenocereus, while pitahaya or dragon fruit refers to fruit Hylocereus undatus · List of edible cacti · Sugar-apple · Hylocereus. Dragon fruit is a beautiful fruit grown in Southeast Asia, Mexico, Central and South America and Israel. The plant is actually a type of cactus. Learn more about dragon fruit nutrition facts, health benefits, healthy recipes, and other fun facts to enrich your diet.