Dragon Fruit
Selenicereus undatus
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Dragon Fruit (Selenicereus undatus) is a spectacular climbing cactus in the family Cactaceae, celebrated worldwide for its stunning nocturnal blooms — among the largest flowers in the cactus family — and its vibrantly colored, exotically beautiful fruits that have become one of the most sought-after superfruits of the 21st century. The fruit's hot pink or yellow skin, studded with green scales reminiscent of a mythical dragon, gives this species its evocative common name.
• Also known as Pitaya, Pitahaya, or Night-Blooming Cereus
• The genus name Selenicereus combines the Greek "selene" (moon) and the Latin "cereus" (wax taper), referencing the nocturnal, candle-like blooms
• The species epithet "undatus" means "wavy" in Latin, describing the wavy margins of the stems
• One of the most commercially important cactus species globally, cultivated for fruit production across tropical and subtropical regions
• Individual fruits typically weigh 200 to 500 grams, though specimens exceeding 1 kg have been recorded
Taxonomy
Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Caryophyllales
Family
Cactaceae
Genus
Selenicereus
Species
Selenicereus undatus
Selenicereus undatus is native to Central America and likely parts of southern Mexico.
• Believed to have originated in the region spanning from southern Mexico through Guatemala, Belize, Honduras, Nicaragua, and Costa Rica
• Grows at elevations from sea level to approximately 1,500 meters in tropical deciduous and semi-deciduous forests
• Naturally an epiphyte or lithophyte, climbing tree trunks and rock faces in forest margins and clearings
• The exact native range is somewhat uncertain due to centuries of cultivation and naturalization across the tropics
• Now widely cultivated in Vietnam (where it was introduced by the French in the 19th century), Thailand, Israel, Colombia, Ecuador, Australia, and many other tropical and subtropical regions
• First described by the Swedish botanist Carl Linnaeus in 1753 as Cactus undatus, later transferred to the genus Selenicereus by the Italian botanist Vincenzo Riccobono in 1909
• Vietnam is currently the world's largest commercial producer of Dragon Fruit
• Believed to have originated in the region spanning from southern Mexico through Guatemala, Belize, Honduras, Nicaragua, and Costa Rica
• Grows at elevations from sea level to approximately 1,500 meters in tropical deciduous and semi-deciduous forests
• Naturally an epiphyte or lithophyte, climbing tree trunks and rock faces in forest margins and clearings
• The exact native range is somewhat uncertain due to centuries of cultivation and naturalization across the tropics
• Now widely cultivated in Vietnam (where it was introduced by the French in the 19th century), Thailand, Israel, Colombia, Ecuador, Australia, and many other tropical and subtropical regions
• First described by the Swedish botanist Carl Linnaeus in 1753 as Cactus undatus, later transferred to the genus Selenicereus by the Italian botanist Vincenzo Riccobono in 1909
• Vietnam is currently the world's largest commercial producer of Dragon Fruit
Selenicereus undatus is a large, climbing or scrambling epiphytic cactus with three-angled stems.
Stems:
• Thick, fleshy, triangular in cross-section, 5 to 8 cm wide
• Dark green, often with a glaucous bloom; margins undulate (wavy)
• Margins bear small, dark spines in the areoles, 2 to 4 mm long, typically 1 to 3 per areole
• Produce aerial roots from the areoles that cling to supports and absorb moisture
• Can climb 5 to 10 meters or more in favorable conditions
Flowers:
• Enormous, funnel-shaped, 25 to 35 cm long and 20 to 30 cm in diameter
• Pure white on the inside, greenish-yellow to brownish on the outer sepals
• Intensely fragrant with a sweet, jasmine-like scent
• Open only at night (ca. 8 PM to midnight), lasting a single night
• Pollinated naturally by bats and large sphinx moths
• Among the largest flowers in the cactus family
Fruit:
• Oblong to ellipsoidal, 10 to 15 cm long and 7 to 10 cm in diameter
• Bright magenta-pink to deep red skin with prominent green-tipped bracts (scales)
• White flesh studded with thousands of tiny black seeds (similar to kiwi seeds)
• Flesh is juicy, mildly sweet, with a texture described as a cross between a kiwi and a pear
• Fruit develops from pollinated flowers in approximately 30 to 50 days
Stems:
• Thick, fleshy, triangular in cross-section, 5 to 8 cm wide
• Dark green, often with a glaucous bloom; margins undulate (wavy)
• Margins bear small, dark spines in the areoles, 2 to 4 mm long, typically 1 to 3 per areole
• Produce aerial roots from the areoles that cling to supports and absorb moisture
• Can climb 5 to 10 meters or more in favorable conditions
Flowers:
• Enormous, funnel-shaped, 25 to 35 cm long and 20 to 30 cm in diameter
• Pure white on the inside, greenish-yellow to brownish on the outer sepals
• Intensely fragrant with a sweet, jasmine-like scent
• Open only at night (ca. 8 PM to midnight), lasting a single night
• Pollinated naturally by bats and large sphinx moths
• Among the largest flowers in the cactus family
Fruit:
• Oblong to ellipsoidal, 10 to 15 cm long and 7 to 10 cm in diameter
• Bright magenta-pink to deep red skin with prominent green-tipped bracts (scales)
• White flesh studded with thousands of tiny black seeds (similar to kiwi seeds)
• Flesh is juicy, mildly sweet, with a texture described as a cross between a kiwi and a pear
• Fruit develops from pollinated flowers in approximately 30 to 50 days
Dragon Fruit is not only delicious but also nutritionally valuable.
Per 100 g of fresh fruit (white-fleshed variety):
• Calories: approximately 50 to 60 kcal
• Water content: approximately 85 to 90%
• Carbohydrates: 9 to 13 g
• Dietary fiber: 1.5 to 3 g
• Protein: 1 to 2 g
• Fat: 0.1 to 0.6 g
Vitamins and minerals:
• Vitamin C: 4 to 25 mg (significant antioxidant content)
• Iron: 0.5 to 1 g
• Magnesium: 10 to 25 mg
• Calcium: 5 to 10 mg
• Phosphorus: 20 to 35 mg
• Potassium: 150 to 250 mg
Antioxidants:
• Red-fleshed varieties (S. monacanthus and hybrids) contain significant levels of betacyanins, the same pigments found in beets
• Seeds are rich in omega-3 and omega-6 essential fatty acids
• Contains polyphenols and flavonoids with antioxidant properties
Health benefits:
• Low glycemic index makes it suitable for people monitoring blood sugar
• High fiber content supports digestive health
• Prebiotic properties that promote beneficial gut bacteria
Per 100 g of fresh fruit (white-fleshed variety):
• Calories: approximately 50 to 60 kcal
• Water content: approximately 85 to 90%
• Carbohydrates: 9 to 13 g
• Dietary fiber: 1.5 to 3 g
• Protein: 1 to 2 g
• Fat: 0.1 to 0.6 g
Vitamins and minerals:
• Vitamin C: 4 to 25 mg (significant antioxidant content)
• Iron: 0.5 to 1 g
• Magnesium: 10 to 25 mg
• Calcium: 5 to 10 mg
• Phosphorus: 20 to 35 mg
• Potassium: 150 to 250 mg
Antioxidants:
• Red-fleshed varieties (S. monacanthus and hybrids) contain significant levels of betacyanins, the same pigments found in beets
• Seeds are rich in omega-3 and omega-6 essential fatty acids
• Contains polyphenols and flavonoids with antioxidant properties
Health benefits:
• Low glycemic index makes it suitable for people monitoring blood sugar
• High fiber content supports digestive health
• Prebiotic properties that promote beneficial gut bacteria
Dragon Fruit can be grown both ornamentally and commercially for fruit production.
Climate:
• Tropical to subtropical; thrives in warm, humid conditions
• Optimal temperatures between 21 and 29°C
• Damaged by prolonged exposure below 0°C; requires frost-free locations
• Suitable for USDA hardiness zones 10 to 12
Soil and support:
• Adaptable to a range of well-drained soils, including sandy loam and rocky substrates
• pH 5.5 to 7.0 is ideal
• Requires a strong support structure — a trellis, post, or tree — as the climbing stems become heavy
• Commercial plantations typically use concrete or wooden posts with a cross-arm at the top
Planting:
• Propagated easily from stem cuttings 30 to 60 cm long
• Cuttings should be allowed to callus for 5 to 7 days before planting
• Plant in full sun to partial shade; flowering and fruiting are best in full sun
• Space plants 2 to 3 meters apart on their support structures
Watering:
• Regular watering during the growing season; reduce in winter
• Tolerant of brief drought once established but consistent moisture improves fruit yield
• Avoid waterlogged conditions which promote root rot
Pollination:
• Many cultivated varieties are self-sterile and require cross-pollination with another variety for fruit set
• Hand pollination is commonly practiced in commercial orchards, performed at night when flowers are open
• Natural pollinators include bats and hawk moths
Climate:
• Tropical to subtropical; thrives in warm, humid conditions
• Optimal temperatures between 21 and 29°C
• Damaged by prolonged exposure below 0°C; requires frost-free locations
• Suitable for USDA hardiness zones 10 to 12
Soil and support:
• Adaptable to a range of well-drained soils, including sandy loam and rocky substrates
• pH 5.5 to 7.0 is ideal
• Requires a strong support structure — a trellis, post, or tree — as the climbing stems become heavy
• Commercial plantations typically use concrete or wooden posts with a cross-arm at the top
Planting:
• Propagated easily from stem cuttings 30 to 60 cm long
• Cuttings should be allowed to callus for 5 to 7 days before planting
• Plant in full sun to partial shade; flowering and fruiting are best in full sun
• Space plants 2 to 3 meters apart on their support structures
Watering:
• Regular watering during the growing season; reduce in winter
• Tolerant of brief drought once established but consistent moisture improves fruit yield
• Avoid waterlogged conditions which promote root rot
Pollination:
• Many cultivated varieties are self-sterile and require cross-pollination with another variety for fruit set
• Hand pollination is commonly practiced in commercial orchards, performed at night when flowers are open
• Natural pollinators include bats and hawk moths
Dragon Fruit is one of the most commercially important edible cacti in the world.
Culinary:
• Eaten fresh as a table fruit — sliced in half and scooped from the skin with a spoon
• Used in smoothies, juices, cocktails (including dragon fruit margaritas and sangria)
• Added to fruit salads, yogurt bowls, and desserts
• The mild flavor pairs well with tropical fruits, lime, and mint
• Dried dragon fruit is marketed as a snack food
Commercial cultivation:
• Global production has expanded dramatically, with major industries in Vietnam, Thailand, Israel, Colombia, and Ecuador
• Vietnam produces over 1 million tonnes annually from approximately 50,000 hectares
• Multiple cultivars exist with pink, red, or white flesh and pink or yellow skin
• Yellow-skinned varieties (often S. megalanthus) are typically sweeter and command premium prices
Industrial uses:
• Fruit extract used as a natural food coloring agent (pink to red)
• Cosmetic industry uses dragon fruit extract in skincare products for its antioxidant properties
• The peel has been investigated as a source of natural pectin and dietary fiber
Culinary:
• Eaten fresh as a table fruit — sliced in half and scooped from the skin with a spoon
• Used in smoothies, juices, cocktails (including dragon fruit margaritas and sangria)
• Added to fruit salads, yogurt bowls, and desserts
• The mild flavor pairs well with tropical fruits, lime, and mint
• Dried dragon fruit is marketed as a snack food
Commercial cultivation:
• Global production has expanded dramatically, with major industries in Vietnam, Thailand, Israel, Colombia, and Ecuador
• Vietnam produces over 1 million tonnes annually from approximately 50,000 hectares
• Multiple cultivars exist with pink, red, or white flesh and pink or yellow skin
• Yellow-skinned varieties (often S. megalanthus) are typically sweeter and command premium prices
Industrial uses:
• Fruit extract used as a natural food coloring agent (pink to red)
• Cosmetic industry uses dragon fruit extract in skincare products for its antioxidant properties
• The peel has been investigated as a source of natural pectin and dietary fiber
Fun Fact
A single Dragon Fruit plant can produce fruit for over 20 years, and in optimal tropical conditions, a well-managed orchard can yield 20 to 30 tonnes of fruit per hectare annually — making it one of the most productive fruit-bearing cacti in agricultural production.
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