Ekebergia capensis
| Cape ash (Ekebergia capensis) | |
|---|---|
| Scientific name | Ekebergia capensis |
| Genus | Ekebergia |
| Family | Meliaceae |
| Order | Sapindales |
| Growth form | Evergreen to semi-deciduous tree, usually about 7–20 m |
| Native setting | Tropical and southern Africa; evergreen, riverine, coastal and seasonally dry habitats |
| Fruit | Pink to bright-red fleshy drupes about 1–3 cm long or across, with 2–4 stones |
Ekebergia capensis is an African tree commonly called Cape ash or dog plum. GBIF returns it as an exact accepted species match in Meliaceae and the genus Ekebergia.[1] Plants of the World Online also treats the binomial as an accepted species and places its native range across tropical and southern Africa.[2]
Description[edit | edit source]
The tree is described as evergreen or semi-deciduous, with a usual height of about 7–20 m and exceptional records reaching roughly 35 m. It occurs in evergreen and riverine forest, coastal savannah and seasonally dry tropical settings, including deep sandy sites and other well-drained ground.[3][4] The leaves are glossy and pinnate. Scented flowers are borne in loose sprays; in southern Africa, flowering is chiefly recorded from September to November.[3]
The fruit is a fleshy, globose to ellipsoid drupe that changes from green to pink, red-brown or bright red as it ripens. Descriptions place it at roughly 10–30 mm and give two to four stones or seeds per fruit.[3][4]
Cultivation[edit | edit source]
Soil and water[edit | edit source]
Deep sandy soil, loam and other light-to-medium, freely draining ground suit the settings associated with the species. Riverine habitat does not imply permanently waterlogged roots: the practical balance is reliable moisture during establishment with drainage that allows the root zone to re-oxygenate between irrigation events.[3][4]
Regular water supports establishment and active growth. Light drought tolerance is described after the tree is established, but that should be treated as a margin for mature plants rather than a reason to let young trees dry hard. The roots are described as non-aggressive, a useful placement characteristic for a large garden or park tree.[4]
Sun and humidity[edit | edit source]
Full sun or semi-shade is suitable. The native range spans humid evergreen and riverine settings as well as coastal savannah and seasonally dry habitats, so light, airflow and ambient humidity can vary substantially with provenance and site.[3][5] Give a young plant protection from severe exposure while its root system is developing, then increase light as growth permits.
Seasonal changes[edit | edit source]
The species comes from climates with a seasonal wet–dry contrast. In cultivation, keep irrigation steadier through establishment and the warm active-growth period; after rooting, allow the interval between waterings to widen only as the plant demonstrates tolerance. The southern African flowering period is mainly September–November, with fruiting commonly extending from December into April, although local climate shifts the calendar.[3][4]
The agroforestry treatment describes slight drought and light-frost tolerance but severe-frost tenderness. Young trees therefore merit protection from freezing weather even where an established specimen may cope with a brief light frost.[4]
Propagation[edit | edit source]
For seed, clean the fruit pulp from the stones and presoak before sowing. A practical propagation treatment places the seed no deeper than 5 mm and gives germination in about four to eight weeks; tip cuttings, hardwood cuttings and truncheons are also listed as possible methods.[5] These timings are starting parameters rather than a guarantee for every seed lot.
Seed storage behavior is variable. One reference records 52% germination at 21% moisture content and 39% after nine months at 4 °C, so fresh, well-handled seed remains the safer starting material when it is available.[4]
Because the species is dioecious, seedlings cannot be assumed to provide both sexes in one planting. Retain more than one healthy plant when fruit and seed production is the goal, or establish known male and female material where its provenance is documented.[4][5]
Flowering, fruiting, and harvest[edit | edit source]
Male and female flowers occur on separate trees, so fruit production requires access to both sexes. In southern African records, flowering is concentrated in September–November and fruiting in December–April. Flowers are scented and arranged in loose sprays; ripening fruit turns red or bright red.[3][4]
Fruit size varies by description from about 1 to 3 cm, and each fruit commonly contains two to four stones. A red or bright-red color is a useful ripening cue in the descriptions, but local climate and tree sex affect the timing of a crop.[3][4]
Fruit and uses[edit | edit source]
The ripe fruit is described as edible, with pink to red-brown or deep-red skin and soft, fleshy pulp. Palatability is rated low in the agroforestry account, while another description compares the flavor with onion; taste may therefore be a limiting quality even when the fruit is mature.[4][5] An edible-use description is not a food-safety assessment, and bark or root hazard notes should not be transferred to the fruit without dedicated evidence.