Carambola, Star Fruit, Starfruit, Five-corner, Five-finger, Star Apple, Chinese Gooseberry, Coromandel Gooseberry, Cucumber Tree, Kamrakh, Kamranga, Kamaranga, Belimbing, Balimbing, Balingbing, Thambaratham, Tamarindo, Zibline
Averrhoa carambola, commonly known as star fruit or carambola, is a dazzling tropical treat known for its unique shape and refreshing flavor. Slice it crosswise and you’ll see why it gets its name—each piece looks like a perfect star. Whether you’re drawn to its crisp texture, tangy taste, or bright yellow skin, this fruit is as fun to eat as it is to look at.
Star fruit is a member of the Oxalidaceae family (wood sorrel family), home to ornamental favorites like the little tree plant, violet wood sorrel, redwood sorrel, silver shamrock, and the iconic good luck plant. Other notable members include the striking false shamrock, purple shamrock, and the eye-catching candy cane sorrel.
The star fruit tree typically grows 20–30 feet tall, with a rounded, bushy canopy and delicate lilac-pink flowers. The fruit itself is oblong with five to six prominent ridges running lengthwise. When sliced, it reveals its signature star shape. The skin is smooth and waxy, and the flesh is juicy, crisp, and translucent yellow. Sweet or tart depending on the variety, star fruit has a flavor somewhere between apple, grape, and citrus.
Star fruit is native to Southeast Asia and has long been cultivated in countries like Malaysia, the Philippines, Thailand, and India. Today, it’s also grown in tropical parts of the Americas and Australia.
The star fruit tree is a fast-growing, semi-evergreen species that flowers and fruits throughout the year in warm climates. It prefers full sun and moist, well-drained soil, and can produce up to 200 pounds (90 kg) of fruit annually when mature.
Condition | Height | Spread | Notes |
---|---|---|---|
Tropical/Subtropical | 20–30 ft (6–9 m) | 15–25 ft (4.5–7.6 m) | Fruits 2–3 times per year in ideal conditions |
Container Grown | 6–10 ft (2–3 m) | 4–8 ft (1.2–2.4 m) | Best with dwarf varieties like ‘Arkin’ |
The star fruit tree produces clusters of small, fragrant flowers that are pink to lavender with purple streaks. These blossoms appear throughout the year and attract pollinators like bees and butterflies.
The star fruit (carambola) measures 2–6 inches (5–15 cm) long and is crisp, juicy, and translucent when ripe. It has a mildly sweet-tart flavor, with both sweet and sour varieties available. The entire fruit—including its thin, edible skin—is consumed, and each fruit contains several small, flat seeds.
Star fruit trees can begin fruiting as early as 3–4 years after planting. In tropical and subtropical climates, they typically bear fruit two to three times a year. Main harvest seasons vary by region but often occur from late summer through winter—for example, from August to September and December to February in places like South Florida and Southeast Asia. Tropical Fruits You Have Probably Never Heard of (But Should Try!)
Leaves are compound, soft green, and arranged alternately along the branches. Each leaf has 5 to 11 ovate leaflets that can fold up at night or in response to touch, much like sensitive plants.
Best grown in USDA Zones 10–12, star fruit trees are frost-sensitive and prefer temperatures above 60°F (15°C). They grow best in humid climates with ample rainfall.
Star fruit trees support a lively ecosystem. Their small, lavender-pink flowers are rich in nectar and attract a variety of pollinators, especially bees and butterflies.
Once the fruit begins to ripen, the sweet aroma draws in birds, fruit bats, and small mammals like squirrels, who may feed on the juicy fruit. While charming, this wildlife activity means gardeners should harvest promptly to avoid losing ripe fruit to hungry visitors.
Star fruit contains oxalates and caramboxin—natural compounds that can be harmful to individuals with kidney issues. People on certain medications should also consult their doctor before consuming star fruit or its juice.
While star fruit trees are admired for their ornamental value and delicious fruit, they can become invasive in some tropical and subtropical environments. In regions with ideal growing conditions and no natural checks, they may spread rapidly and outcompete native vegetation.
Star fruit is considered at risk of becoming invasive in parts of the Caribbean, Central America, and the Pacific Islands. Its seeds germinate readily, and trees can naturalize in unmanaged areas if not carefully maintained.
To prevent unwanted spread, gardeners should harvest fruit promptly, avoid discarding seeds in natural areas, and remove volunteer seedlings early. Responsible cultivation ensures that star fruit remains a rewarding addition to your garden without disrupting local ecosystems.
Star fruit is a hydrating, low-calorie tropical fruit that delivers a surprising nutritional punch. Just 100 g of this vibrant fruit provides a refreshing mix of vitamin C, fiber, and antioxidants—all while being naturally low in sugar and fat. It’s a smart, flavorful addition to a balanced diet.
Nutrient | Amount (per 100 g) |
---|---|
Calories | 31 kcal |
Carbohydrates | 6.7 g |
Fiber | 2.8 g |
Sugar | 3.9 g |
Protein | 1.0 g |
Fat | 0.3 g |
Vitamin C | 34.4 mg (41% DV) |
Copper | 0.14 mg (6% DV) |
Potassium | 133 mg (3% DV) |
Folate | 12 mcg (3% DV) |
%DV = Percent Daily Value, based on a 2,000-calorie diet.
Star fruit isn’t just eye-catching—it’s a nutrient-dense superfruit with a variety of health perks. Here’s why it earns a spot in a healthy diet:
Whether eaten fresh, added to salads, blended into smoothies, or juiced, star fruit is a delicious way to give your body a tropical nutrient boost.
Top Tropical Fruits that Boost your Health Naturally
Star fruit is entirely edible and simple to prepare—no peeling required! Here’s how to get it ready for snacking or cooking:
Star fruit trees like consistent moisture but do not tolerate waterlogging. Water regularly during dry spells, especially when young or when fruiting. Mulch can help conserve moisture.
Star fruit trees thrive in tropical and subtropical climates. They are sensitive to frost—young trees can be killed by temperatures below 32°F (0°C). Mature trees tolerate short drops to around 27°F (-2.7°C) but may suffer damage.
With proper care, trees begin fruiting within 3–5 years. In ideal conditions, mature trees can produce 200–400 pounds (90–180 kg) of fruit annually. Main fruiting seasons vary by region but often occur in summer and fall.
Yes, you can grow star fruit (Averrhoa carambola) in containers—especially useful in small spaces or in cooler climates where the tree needs to be moved indoors during cold spells.
With attentive care, container-grown star fruit trees can produce fruit within 2–4 years and bring a tropical touch to patios, greenhouses, and sunny balconies.
Star fruit is typically ready to harvest when the fruit turns bright yellow with slightly browned edges. A ripe fruit will feel firm but give slightly under pressure. Avoid picking it too green, as it won’t sweeten much after harvest.
Fully ripe star fruit is juicy, sweet-tart, and perfect for snacking or adding to both sweet and savory recipes—so harvest at peak ripeness and enjoy it fresh or stored for later use.
Grafting is preferred for consistent fruit quality and earlier harvests. Grafted trees often begin fruiting within 2–3 years.
Whether starting from seed or using grafting techniques, young star fruit trees require warmth, light, and gentle watering to get established. For best results, use grafted trees for sweetness and quicker fruit production.
Star fruit trees can be affected by various pests, especially in warm, humid regions. Regular monitoring and early intervention are key to healthy trees.
Most diseases affecting star fruit are fungal or bacterial and thrive in damp or overcrowded environments.
Ripe starfruit turns yellow with light brown edges on the ridges. It should feel firm but give slightly when pressed and have a fragrant aroma.
Yes, starfruit comes in sweet and tart varieties. Common cultivars include ‘Arkin’, ‘Maha’, and ‘Demak’ for sweet types and ‘Golden Star’ and ‘Thayer’ for tart types.
Yes, starfruit is low in calories and high in vitamin C, fiber, and antioxidants. It supports immune health, digestion, and hydration.
Starfruit offers anti-inflammatory and antioxidant effects, supports heart and digestive health, and may help regulate blood sugar levels.
No, a medium starfruit has around 30 calories and 4 grams of sugar, making it a low-calorie, low-sugar fruit suitable for most diets.
Yes, it contains fiber which aids digestion and promotes a feeling of fullness, making it a smart snack for weight management.
Yes, it contains powerful antioxidants like quercetin, gallic acid, and vitamin C that help protect cells from oxidative stress.
Starfruit is safe for most people, but those with kidney issues or certain medication interactions should consult a healthcare provider before eating it.
In susceptible individuals, starfruit can cause confusion, nausea, or seizures due to neurotoxic compounds. It’s best avoided by those with kidney problems.
People with kidney disease can’t filter out oxalates and caramboxin effectively, which may lead to toxicity or neurological symptoms.
Yes, like grapefruit, starfruit may interfere with certain medications by inhibiting enzymes in the liver. Speak with your doctor if you’re on prescription drugs.
Yes, the thin, slightly waxy skin is edible and adds to the fruit’s crunch and nutritional value. Just rinse well before eating.
Starfruit can be used in fruit salads, chutneys, salsas, desserts, jams, savory dishes like stir-fries and curries, or as an eye-catching garnish.
Absolutely. Starfruit juice is light and refreshing, and its tart-sweet flavor pairs well with citrus, pineapple, and berries in smoothies.
It pairs well with tropical fruits, seafood, leafy greens, yogurt, ginger, coconut milk, and mild cheeses like goat cheese or feta.
Ripe starfruit can be stored in the refrigerator for up to one week. Overripe fruit should be consumed or preserved quickly to avoid spoilage.
Yes, starfruit can be grown in warm climates or containers. Dwarf cultivars are ideal for home gardens, and potted trees can be moved indoors in winter.
Starfruit thrives in tropical to subtropical climates with plenty of heat, humidity, and sun. It is sensitive to frost and prefers well-drained, slightly acidic soil.
Hardiness |
10 - 12 |
---|---|
Plant Type | Fruits, Trees |
Plant Family | Oxalidaceae |
Common names | Star Fruit |
Exposure | Full Sun |
Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall |
Height | 6' - 30' (180cm - 9.1m) |
Spread | 4' - 25' (120cm - 7.6m) |
Maintenance | Low |
Water Needs | Average |
Soil Type | Loam, Sand |
Soil pH | Acid, Neutral |
Soil Drainage | Moist but Well-Drained |
Characteristics | Showy, Evergreen, Fruit & Berries |
Attracts | Bees, Butterflies, Birds |
Garden Uses | Beds And Borders, Patio And Containers |
Garden Styles | Mediterranean Garden |
Hardiness |
10 - 12 |
---|---|
Plant Type | Fruits, Trees |
Plant Family | Oxalidaceae |
Common names | Star Fruit |
Exposure | Full Sun |
Season of Interest | Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall |
Height | 6' - 30' (180cm - 9.1m) |
Spread | 4' - 25' (120cm - 7.6m) |
Maintenance | Low |
Water Needs | Average |
Soil Type | Loam, Sand |
Soil pH | Acid, Neutral |
Soil Drainage | Moist but Well-Drained |
Characteristics | Showy, Evergreen, Fruit & Berries |
Attracts | Bees, Butterflies, Birds |
Garden Uses | Beds And Borders, Patio And Containers |
Garden Styles | Mediterranean Garden |
How many Averrhoa carambola (Star Fruit) do I need for my garden?
Plant | Quantity | |
---|---|---|
Averrhoa carambola (Star Fruit) | N/A | Buy Plants |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
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