Ziziphus suluensis
| Ziziphus suluensis | |
|---|---|
| Scientific name | Ziziphus suluensis[1] |
| Genus | Ziziphus[1] |
| Family | Rhamnaceae[1] |
| Order | Rosales[4] |
| Native range | Borneo to the Sulu/Tawi-Tawi Philippines[1][2] |
| Habitat | Wet tropical lowland and montane rainforest, recorded from 5–1500 m[1][2] |
| Habit | Spiny woody climber, recorded to at least 15 m[1][2] |
| Fruit | Yellow-orange, densely hairy obovoid drupe, about 1.2–1.5 cm long[1][2] |
Ziziphus suluensis is an accepted species of Rhamnaceae native from Borneo to the Sulu/Tawi-Tawi Philippines. Its name was published in Philippine Journal of Science 30: 408 (1926).[1][2][3] It is a spiny woody climber of wet tropical lowland and montane rainforest, with records from 5–1500 m.[1][2]
The species is a large climber rather than a compact jujube-like tree. Its leaves are about 4.5–13 × 1.9–5.2 cm, with three principal veins and dark glands on the lower surface; strong marginal veins are absent in the diagnostic treatment. The fruit is a fleshy, single-stoned, obovoid drupe that ripens yellow-orange and is densely hairy, measuring about 1.2–1.5 × 0.9–1.5 cm.[1][2]
Description[edit | edit source]
The spiny climbing habit, lower-leaf glands, venation and small densely hairy drupes are useful characters when separating Ziziphus suluensis from related jujube-like plants. The recorded height of at least 15 m describes a natural climber, not a fixed cultivated size.[1][2]
Cultivation[edit | edit source]
Ziziphus suluensis comes from wet tropical rainforest and grows as a woody climber. The starting points below are habitat-based inferences rather than tested species limits.
Soil and water[edit | edit source]
Use a root zone that holds moisture but drains freely after heavy rain. Keep establishing plants from repeated severe drying while preventing stagnant water around the roots. This is a habitat-based inference from the recorded wet-rainforest setting, not a species-tested soil or irrigation schedule.[1][2]
Sun and humidity[edit | edit source]
Begin young plants in bright filtered light, humid air and shelter from desiccating wind, with a strong trellis or tree-like support for the climbing stems. Exposure can be adjusted in response to growth, but the habitat records do not establish a fixed shade percentage or humidity threshold.[1][2]
Seasonal changes[edit | edit source]
Flowering collections are recorded in January and October, while fruiting collections are recorded in February, March, June and December.[1] These sampled native observations are not a fixed garden calendar. In cultivation, keep moisture protection aligned with the local warm, wet and drier seasons and record the plant's own flowering and ripening response.
Propagation[edit | edit source]
Propagation should be treated as experimental for this species. The single stone in the fleshy drupe is the most direct material to test from correctly identified ripe fruit, but germination treatment, storage interval, rooting, grafting and compatibility remain unresolved. Schedules from cultivated congeners should not be transferred to Ziziphus suluensis.[2]
Flowering, fruiting, and harvest[edit | edit source]
The native specimen record includes flowering in January and October and fruiting in February, March, June and December.[1] These months reflect sampled plants and locations rather than a demonstrated cultivated bearing age, yield or pollination requirement. Harvest timing should be judged from the individual plant's ripening change toward yellow-orange rather than from a fixed interval after flowering.[1]
Fruit and uses[edit | edit source]
The fruit is a small, yellow-orange, densely hairy, obovoid drupe with one stone, about 1.2–1.5 cm long.[1][2] A named field record describes the fruit as edible. This is a limited documented-use observation; it does not establish preparation, flavor, nutritional value, storage behavior or general food safety.[1]