Starfruit Tree Seeds

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About & Species

Starfruit Tree
(Averrhoa carambola)

The Starfruit tree is a slow-growing tropical fruit tree native to the Philippines, Indonesia, India, Malaysia and Vietnam. It grows 20 to 30 feet tall and produces edible star-shaped fruits that have a sour & mild sweet taste. The Starfruit tree blooms red purple flowers year-round under tropical weather conditions.  

Soil Type: Prefers well-drained sandy soils, heavy clay or limestone.

Zones: 10 to 11

Germination Range: 60-80%

Stratification Requirement: N/A

Indoor Planting: If your seeds require stratification or scarification – do the recommended pretreatment before planting indoors. Planting Instructions: Fill a container with seed starting mix to about ½ inch from the top. Place your seeds 1 inch to 1 ½ inches below the soil surface. Gently water your seeds to keep moist, not soaking wet. Heat & humidity is critical for germination. Germination may occur in 1 week or as long as 3 months (depending on the species). Place the seed container on a heat mat under growing light(s). Keep your growing lights on 14 hours per day. Keep your heat mat on 24 hours per day. Once your seeds germinate, move each seed into its own container under the growing lights and on the heat mat. Keep your seedlings indoors for 2-3 months before transplanting outdoors in the spring (May to June).

Outdoor Planting: If your seeds do not require stratification: the best time to plant tree and shrub seeds outdoors is after the last frost in your area (spring). In the Northern states – the best time to plant seeds outdoors is from May to June. If your seeds require pretreatment: you should plant your seeds outdoors before the ground freezes in your area (late September to early November). Your seeds will naturally stratify during the cold winter. Germination usually occurs in May or during the spring season.