Sri Kembangan starfruit tree with large golden-yellow five-ribbed fruit hanging among green leaflets

Sri Kembangan Starfruit

Averrhoa carambola 'Sri Kembangan'
Categories:
Tropical Fruit  ·  
Tropical Fruit
Light
Morning sun / afternoon shade
Water
Keep the root zone consistently moist but never waterlogged. Water deeply and frequently during extreme heat, adjusting to soil drainage; reduce watering in winter. Not drought tolerant.
Size
20-30 ft tall × 20-25 ft wide
Habit
Upright tree – single-trunk
Toxicity
Toxic — Pets
Description
Sri Kembangan is a Malaysian starfruit cultivar producing large, sweet, golden-yellow fruit with five ribs that form star-shaped slices. A frost-sensitive tropical tree requiring substantial protection in Phoenix Zone 9b.
Bloom Time
Spring and fall; may bloom multiple times a year in warm conditions
Deciduous / Evergreen
Evergreen
Special Features
Edible
Growth Rate
Moderate to fast
Growth Habit
Upright tree – single-trunk
Mature Size
20-30 ft tall × 20-25 ft wide
Flower Color
Lavender to pink
Foliage Color
Green
Landscape Use
Container / Patio, Desert / Xeriscape, Edible / Orchard
Garden Style
Desert / Xeriscape, Edible Garden, Tropical
Soil
Amended / Rich, Prefers Acidic, Well-Drained
Companion Plants
Ginger, Guava, Irrigated settings, Tropical hibiscus
Toxic — Pets
Fruit hazardous to people with kidney disease (caramboxin); high oxalate content, toxic to pets in quantity
Care Instructions

Light: Morning sun with afternoon shade; filtered sunlight is beneficial during Phoenix summers. Protect from reflected heat and hot, drying winds.

Water: Keep the root zone consistently moist but never waterlogged. Water deeply and frequently during extreme heat, adjusting to soil drainage; reduce watering in winter. Not drought tolerant.

Soil: Fertile, well-drained soil, preferably slightly acidic, around pH 5.5–6.5. Phoenix’s alkaline soils and saline irrigation water can cause nutrient deficiencies and leaf burn. Use an acidic container mix where soil conditions are unsuitable.

Mature size: Approximately 20–30 feet tall and 15–25 feet wide under favorable tropical conditions; usually smaller in Phoenix. Can be maintained around 8–12 feet tall with selective pruning.

Bloom: May flower in several flushes from spring through fall when warm and actively growing. Phoenix heat, low humidity, and cold can limit flowering and fruit set.

Evergreen / deciduous: Evergreen in frost-free conditions; may shed leaves during cold, drought, or other stress.

Growth rate: Moderate to fast with warmth, adequate moisture, and suitable nutrition; slower under Phoenix heat, alkalinity, or cold stress.