Dimocarpus longan 'Kohala'
fruitKohala is the longan that built backyard longan growing in Florida - the overwhelming majority of trees are this single dependable cultivar, introduced from Hawaii in the 1950s. A close relative of the lychee, longan hangs its tan, thin-shelled fruit in big drooping clusters; peel the shell and the translucent flesh is sweet and aromatic with a distinctive musky-honey flavor, around a single dark seed that gives the fruit its name (dragon eye). The tree is a large, vigorous, rounded evergreen that bears more reliably than most lychees, making it a productive and ornamental shade tree for warm, subtropical gardens.
Sun
full sun
Water
Every 5 days
Harvest
~3 yrs
to first harvest
Difficulty
medium
Lifecycle
perennial
Comes back every year
Spacing
25-30 ft apart
Planting Depth
Top of the root ball level with or slightly above the soil
Soil pH
5.5-6.5
Soil Type
Sandy, acidic, well-draining
Hardiness Zones
Zones 9 – 12
When to Fertilize
Through the warm season when young; 2-3 times in the rainy season when mature
Fertilizer
Young: 6-6-6 with minor elements; mature: low-nitrogen fertilizer
Longan, like lychee, is subtropical and needs a cool but frost-free winter period to flower; it likes warm 70 to 85F springs and hot, moist summers. It suits zones 9b to 11 (Kohala is best in 10 to 11), planted in full sun, 25 to 30 ft from buildings and other trees, in sandy, acidic, well-drained soil. Water young trees regularly to establish; mature trees need water mainly during bloom, fruiting, and drought. Fertilize a young tree about a month after planting with 6-6-6 plus minor elements and 20 to 30 percent organic nitrogen, repeating through the warm season; on established trees use a low-nitrogen fertilizer two or three times during the rainy season (roughly May to October) to favor flowering over leafy growth. Mulch the roots and shelter young trees from cold.
Direct sow
Apr 15
Projected first harvest
Sep 12 · Year 4
Year 1
Good neighbors that attract beneficial insects or deter pests
Proactive ways to stop trouble before it starts — tap a name with an arrow for its full guide
Caterpillars web shoots and flower panicles - prune out nests and use Bt during bloom flushes
Inspect stems and treat with horticultural oil, pruning heavily encrusted wood
Watch new flushes for stippling and galling, treat with sulfur or oil, and start with clean stock
A wet-weather fruit and leaf fungus - prune for airflow, avoid overhead watering, and clear mummified fruit
Air-layered or grafted longans begin bearing in about 2 to 4 years. Kohala blooms in late winter to spring and ripens from mid-July into early September, peaking in August. The fruit ripens only on the tree and does not sweeten after picking, so taste a few before harvesting whole clusters when the tan skin is full-colored and the flesh is sweet. Cut the bearing stem behind the cluster. Eat fresh, refrigerate for a week or two, or peel and freeze the flesh.
About 60 calories per 100 g with a very high 84 mg vitamin C, 266 mg potassium, and modest fiber. Longans are juicy and refreshing eaten fresh, dropped into drinks and desserts, or dried (when they become intensely sweet and are used in teas and soups).
For educational and informational purposes only — HomeSown is not medical, health, or other professional advice. Always positively identify any plant before handling or eating it; some plants, and some parts of otherwise-edible plants, are toxic. Consult a qualified professional before consuming or otherwise using any plant, especially if you are pregnant, nursing, taking medication, or have a health condition.
Year 2
Year 3
Year 4