Longan — Growing reference
| Scientific name | Dimocarpus longan |
|---|---|
| First harvest or flowering (days) | 1095–1825 |
| Measured from | Transplant |
| Plant spacing (cm) | 609.6–914.4 |
| Mature height (cm) | 609.6–914.4 |
| Mature spread (cm) | 457.2–762 |
| USDA hardiness zones | 10–11 |
| Light | Full sun |
| Water | Moderate |
| Sowing method | Transplant |
Growing directions
Plant grafted trees in deep, well-drained, slightly acidic soil (pH 5.5–6.5) in full sun; longan will not tolerate standing water or saturated roots. A brief winter cool-dry period — temperatures in the mid-40s°F for several weeks — is essential to trigger reliable flowering, making coastal south Florida and extreme south Texas the two viable zones in the continental United States. Fruit clusters ripen in summer and should be harvested by cutting whole panicles with scissors when the skin turns tan to light brown and the flesh is translucent and sweet. Prune annually after harvest to keep the canopy to a manageable height and promote new fruiting wood.
Source and local conditions
Typical planning ranges from OpenPlantDB (CC0). Cultivar, climate, season and growing method can change these values. Confirm the seed label and local guidance before planting.
Source & verification
OpenPlantDB · CC0