Microcos microthyrsa
| Sand raisin (Microcos microthyrsa) | |
|---|---|
| Scientific name | Microcos microthyrsa |
| Genus | Microcos |
| Family | Malvaceae |
| Order | Malvales |
| Native range | Southern Mozambique to KwaZulu-Natal, with records extending to Limpopo |
| Habitat | Sand forest, open woodland, dry bushland, and dry mixed woodland |
| Habit | Usually a shrub or small tree about 2 m; up to 4 m in forest |
| Flowering | October–January in the southern African range |
| Fruiting | February–May in the southern African range |
| Fruit | Smooth, pendulous, reddish-brown oval fruit, about 7 × 13 mm |
| Human use | Fruit described as edible to humans |
Microcos microthyrsa is the accepted name for the sand raisin. Grewia microthyrsa is a synonym retained in the detailed southern African plant account.[1][2][3] It is a low-altitude shrub or small tree of southern Mozambique, South Africa, and nearby subtropical habitats.
Description[edit | edit source]
The plant is usually about 2 m tall, reaching up to 4 m in forest. Its cream to pale-yellow flowers are borne in small terminal clusters. The fruit is pendulous, smooth, reddish brown, and oval, measuring about 7 × 13 mm.[3]
Cultivation[edit | edit source]
Soil and water[edit | edit source]
Native settings include sandy or loamy soils in sand forest, open woodland, dry bushland, and dry mixed woodland. Use fertile, well-drained soil rather than a persistently wet medium. For germination, keep a well-drained seed mix consistently moist; after establishment, adjust watering to the local climate and seasonal drying pattern.[3]
Sun and humidity[edit | edit source]
Sand forest and open woodland represent both canopy-filtered and more open native settings. As a habitat-based starting point, bright filtered light with good airflow is a reasonable placement; acclimate gradually when increasing exposure rather than treating one fixed light level as universal.[3]
Seasonal changes[edit | edit source]
In the southern African range, flowering falls in October–January, followed by fruit availability in February–May. This is spring through mid-summer flowering and late-summer through autumn fruiting in the southern-hemisphere calendar. Keep irrigation responsive to the site's wet and dry periods instead of using a fixed schedule.[3]
Propagation[edit | edit source]
Mature seed can be sown in a well-drained mix kept consistently moist during germination. Stem cuttings should be taken from non-flowering shoots, treated with rooting hormone, and placed in a suitable medium under warm, humid conditions. These are practical propagation directions rather than measured success rates, so avoid treating them as a guarantee of rooting.[3]
Flowering, fruiting, and harvest[edit | edit source]
Cream to pale-yellow flowers appear in small terminal clusters from October to January in the southern African range. Smooth, reddish-brown oval fruits about 7 × 13 mm are recorded from February to May. The seasonal dates describe the source plant's southern African range and should be translated to local conditions rather than copied as a northern-hemisphere calendar.[3]
Fruit and uses[edit | edit source]
The fruit is described as edible to humans in the PlantZAfrica account. That statement records a reported human use; it is not a food-safety assessment or a guarantee that every plant or fruit is safe to consume.[3]