Growing Guide: Longan
Growing Tips
Also known as: Kohala Longan, Sri Champoo Longan, Dragon’s Eye, Si Chom Poo
Plant Kohala and Sri Champoo Longan in full sun with at least 6–8 hours of direct sunlight and provide fertile, well-draining soil. Longans prefer consistent moisture during active growth and fruiting, but avoid waterlogged conditions. Mulch around the tree to retain moisture and regulate soil temperature, keeping mulch away from the trunk. Feed with a balanced, slow-release fertilizer in early spring and supplement during the growing season as needed. Prune in late winter or early spring to remove damaged growth, improve airflow, and maintain a manageable shape. If heavy fruit clusters develop, thinning some fruit can encourage larger, higher-quality fruit. Harvest when the fruit reaches full size and develops a fragrant aroma, sweet flavor, and juicy flesh. Both varieties thrive in warm tropical and subtropical climates and are best suited to Zones 10–11. In Zone 9 and cooler areas, grow in a container or greenhouse where the tree can be protected from prolonged cold and frost.
Quick Facts
| Attribute | Details |
|---|---|
| Botanical Name | Dimocarpus longan |
| Common Names | Kohala Longan, Sri Champoo Longan, Dragon’s Eye, Si Chom Poo |
| Family | Sapindaceae |
| Origin | Southeast Asia; Kohala cultivar developed in Hawaii |
| Plant Type | Tropical Fruit Tree |
| Life Cycle | Perennial, Evergreen |
| Mature Size | 30–40 ft. tall; 20–30 ft. wide |
| Light Requirements | Full Sun |
| Soil | Fertile, well-draining soil; sandy loam preferred |
| Soil pH | 5.5–7.0 |
| Water Needs | Moderate to High; consistent moisture |
| Bloom Time | Spring |
| Harvest Season | Summer to Early Fall |
| Fruit | Round, golden-brown fruit produced in clusters |
| Fruit Flesh | Translucent, juicy; Sri Champoo can develop pink coloration when fully mature |
| Fruit Flavor | Sweet, aromatic, honey-like with rich tropical notes |
| Self-Fertile | Yes |
| Growth Rate | Fast |
| USDA Zones | 10–11; Zone 9+ with protection |
| Propagation | Seed |
| Special Features | Highly productive, sweet aromatic fruit, evergreen tropic |
