Dimocarpus longan
| Longan (Dimocarpus longan) | |
|---|---|
| |
| Scientific name | Dimocarpus longan |
| Genus | Dimocarpus |
| Family | Sapindaceae |
| Order | Sapindales |
| Growth and size | Evergreen tree; 5–15 m |
| Climate and site | Deep, drained soil; a short cooler or drier period can support flowering |
| Propagation | Fresh seed 1–3 weeks; air-layering and grafting preserve cultivars |
| Years to fruit | N/A |
| Fruit and harvest | Seasonal crop after flowering flushes; tan fruit with translucent aril |
Description
Longan is a subtropical-to-tropical Sapindaceae tree with clusters of tan fruits and translucent, aromatic flesh. It generally handles a cooler dry interval better than rambutan.
The accepted genus, family, and order are Dimocarpus, Sapindaceae, and Sapindales.
Cultivation
Longan is native to monsoonal southern China and mainland Southeast Asia. It prefers warm sun, well-drained soil, and a seasonal dry or cool period that can help trigger flowering; excessive nitrogen and constant wet growth may suppress bloom.
Deep, drained soil; a short cooler or drier period can support flowering. Provide airflow and avoid standing water unless the species is being grown in a deliberately wet habitat.
Soil and water
Deep, drained soil; a short cooler or drier period can support flowering; preserve native drainage and organic-matter conditions rather than treating all tropical fruit trees alike.
Sun and humidity
Most plants in this group prefer bright light; young trees may need shelter while roots establish. Humidity should be paired with airflow, not stagnant enclosure.
Seasonal changes
Flowering and harvest vary with local wet/dry or cool/warm cycles. Adjust irrigation to the species' native rhythm and protect warm-tropical plants during cool weather.
Propagation
Fresh seed 1–3 weeks; air-layering and grafting preserve cultivars. Seedlings may vary in fruit quality and maturity; use grafting or other clonal methods when a named selection must be preserved.
Flowering, fruiting, and harvest
Seasonal crop after flowering flushes; tan fruit with translucent aril. Local climate, cultivar, rootstock, pollination, and rainfall can shift the calendar substantially.
Fruit and uses
The ripe fruit is eaten fresh and may be used in drinks, preserves, desserts, or regional savory preparations. Handle ripe fruit carefully because many tropical fruits soften rapidly after harvest.
Photos
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References
Image credits
- Dimocarpus longan fruits.jpg — Wikimedia Commons file page; creator and license are recorded on the source page.
- Longan (Dimocarpus longan) baby fruits and leaves.jpg — Wikimedia Commons file page; creator and license are recorded on the source page.
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