Marabou Thorn, Sickle Bush
Dichrostachys cinerea
Family: Fabaceae
What it is like
Dichrostachys cinerea or Marabou Thorn is a legume characterized by its two-coloured inflorescence native to Africa but can now be found in India, the Caribbean, and parts of Southeast Asia. It is semi-deciduous or deciduous tree covered with spines or thorns and usually grows about 7 m in height. The stems are often twisted and twined together. The fruit is edible; it is a narrow, yellow or brown seedpod that contains 4 small black seeds. The plant also has a wide range of medicinal uses - the bark, roots, and leaves are used in the treatment of dysentery, headaches, toothaches, elephantiasis, snakebites and scorpion stings, leprosy, syphilis, coughs, epilepsy, gonorrhoea, boils, and sore eyes. It can also be used as a contraceptive for women, as laxative, and for massage of fractures. D. cinerea has a strong capacity for natural regeneration and used in soil conservation. The leaves are used as green manure. The bark produces strong fibre used as twine. Debarked roots are used for racks and baskets. The wood is medium heavy to very heavy, hard, and durable. It is used as walking sticks, handles, spears, and tool handles. Other common names are Sickle Bush, Princess Earrings, Bell Mimosa, Chinese Lantern Tree, and Kalahari Christmas Tree.
Dichrostachys cinerea is an evergreen Shrub growing to 8 m (26ft) by 8 m (26ft) at a medium rate. See above for USDA hardiness. It is hardy to UK zone 9. The flowers are pollinated by Bats, Bees. It can fix Nitrogen. It is noted for attracting wildlife. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very acid, very alkaline and saline soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil and can tolerate drought.
Height (m): 8
Where it is found
Usually on poor, occasionally clayey soils, in brushwood, thickets, hedges, teak forest and grassland to elevations of 1,700 metres. Often forms widespread thickets by means of root suckers.
Tropical Africa - Senegal to Somalia, south to Angola and Mozambique. E. Asia - India to Indonesia.
Conservation Status: Status: Least Concern
Countries/locations it is found in
Africa*, Angola, Australia, Benin, Botswana, Brunei, Burkina Faso, Burma, Burundi, Cambodia, Cameroon, Cape Verde, Central Africa, Central African Republic, Chad, China, Comoros, Congo, Côte d'Ivoire, Djibouti, East Africa, East Timor, Egypt, Eritrea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinée, Guinea-Bissau, India, Indonesia, Iran, Ivory Coast, Kenya, Laos, Lesotho, Liberia, Madagascar, Malawi, Malaysia, Mali, Mauritania, Mozambique, Myanmar, Namibia, Niger, Nigeria, North Africa, Pakistan, Philippines, Rwanda, Sahel, Sao Tome et Principe, Saudi Arabia, SE Asia, Senegal, Seychelles, Sierra Leone, Somalia, South Africa, Southern Africa, Sri Lanka, Sudan, Swaziland, Tanzania, Thailand, Timor-Leste, Togo, Uganda, Vietnam, West Africa, Yemen, Zambia, Zimbabwe,
How it is used
Food
Rating: 2
Fruit. The fruit is a narrow, yellow or brown seedpod containing about 4 small black seeds. Seeds.
Seed: includes nuts, cereals, peas and beans.
Seedpod: things such as Okra, French and Runner beans.
Gum: can be chewed as a chewing gum or can often be used as a sweetener or thickening agent in foods.
Medicine
Rating: 2
The bark is astringent and vermifuge. It is used in the treatment of dysentery, headaches, toothaches and elephantiasis. The root is anthelmintic, purgative and strongly diuretic. Infusions are taken for the treatment of snakebites, leprosy, syphilis and coughs. A decoction of the root has been used as a contraceptive for women. The pounded roots and leaves are used to treat epilepsy. The roots or the leaves can be chewed and placed on the sites of snakebites and scorpion stings. The leaves are diuretic and laxative. Applied externally, they are believed to produce a local anaesthesia. They are used in treating gonorrhoea, boils, sore eyes and toothaches. A powder from the leaves is used in the massage of fractures.
Anaesthetic: Numbs the feeling in a local or general area of the body.
Anthelmintic: Expels parasites from the gut.
Astringent: Produces contraction in living tissue, reducing the flow of secretions and discharges of blood, mucus, diarrhoea etc.
Contraceptive: Prevents fertilization occurring in females.
Diuretic: Acts on the kidneys, promoting the flow of urine.
Dysentery: Used in treating dysentery - an infection of the intestines that causes diarrhoea containing blood or mucus.
Epilepsy: Used in the treatment of Epilepsy - a disorder in which nerve cell activity in the brain is disturbed, causing seizures.
Febrifuge: Reduces fevers.
Laxative: Stimulates bowel movements in a fairly gentle manner.
Leprosy: Used to treat leprosy - a chronic bacterial infection of the skin and superficial nerves (in the skin) caused by Mycobacterium leprae.
Odontalgic: Treats toothache (temporary measure only) and other problems of the teeth and gums.
Purgative: A drastic laxative causing a cleansing or watery evacuation of the bowels, usually with a griping pain.
Stings: Used in the treatment of stings and insect bites.
Vermifuge: Expels and kills internal parasites.
Other
Rating: 4
Agroforestry Uses: The plant is widely used for sand dune stabilization and soil conservation. In India, it is recommended for shallow soils, arid western and subhumid alluvial plains and highly degraded calcareous wastelands. Owing to its strong capacity for natural regeneration, it has high potential for ravine reforestation and other soil conservation purposes on difficult sites. The leaves, rich in nutrients, are frequently used as a green manure. In the Sahel, particularly along riverbanks, it is said to improve soils A very effective hedge or barrier. Enclosures made with the plant prevent livestock and other animals from gaining entry to vegetable gardens, cash crops etc. However, since it is difficult to control due to its aggressive weedy character, the use of this plant as a live fence is limited. Plants can be an indicator of overgrazing in low rainfall areas. Other Uses The bark yields a strong fibre that can be used for various applications such as twine. The debarked roots are used for strong plaiting work such as for racks and baskets. A gum obtained from the plant is of low quality. The heartwood is red or dark purple with darker streaks; it is sharply differentiated from the sapwood, which is yellowish-brown with dark streaks. The grain is straight or slightly interlocked; the texture rather fine and even. The wood is medium heavy to very heavy, hard, durable and presumably resistant to the attacks of termites. Due to its generally small dimensions, its utilization is limited to making items such as walking sticks, handles, spears and tool handles. Fencing posts can easily last for up to 50 years. The wood is dense, burns slowly with few sparks and emits a non-toxic smoke, making it an excellent firewood. Because the tree often grows many small trunks, it produces wood that is ideal in size for carrying in a headload. This plant is fire-retardant Suitable for growing in containers.
Basketry: Plant used in making baskets and other items such as chairs. Includes plants that are only used as an ornamental addition.
Biomass: Provides a large quantity of plant material that can be converted into fuel etc.
Fencing: Plants that can be used for fencing.
Fibre: Used for making cloth, rope, paper etc.
Fuel: Usually wood, plant materials that have been mentioned as being a good fuel.
Green manure: Fast-growing plants that can be used to increase the fertility of the soil.
Gum: Gums have a wide range of uses, especially as stabilizers, emulsifiers, thickening agents, adhesives etc.
Hedge: Plants that can be grown as hedges.
Soil conditioner: Plants grown to improve the structure of the soil. See also Green manures.
Soil reclamation: Plants that can be grown in such circumstances an the spoil tips of mines in order to restore fertility.
Soil stabilization: Plants that can be grown in places such as sand dunes in order to prevent erosion by wind, water or other agents.
String: Plants that can be used for string or can be easily made into a string. See also Fibre. Plants for ropes may be included.
Wood: A list of the trees and shrubs that are noted for having useful wood.
Food Forest: Plants for Edible Forest Gardens and Food Forests.
Hedge: Hedge
Nitrogen Fixer: Plants that fix nitrogen in the soil
How it is grown
A plant of low to medium elevations in the tropics, growing best in moist areas but able to succeed in arid areas as well. It is found at elevations up to 2,000 metres. It grows best in areas where annual daytime temperatures are within the range 15 - 40°c, but can tolerate 10 - 50°c. Plants are usually not frost tolerant. It prefers a mean annual rainfall in the range 300 - 500mm, but tolerates 200 - 600mm. These rainfall figures seem much too low - the plant can grow right into the rainforest zone. It occurs in areas with a strong seasonal climate. Succeeds in a range of soils from clays, through loams to sandy soils. Requires a well-drained soil. Succeeds in poor soils. Prefers a pH in the range 5 - 8, tolerating 4.5 - 8.5. Established plants are very drought resistant. Seed production starts when plants are still very young. Each plant, as it grows larger, can produce a large number of seeds almost all year round - these can germinate freely and can also remain dormant in the soil for a long time.The plant can also spread very rapidly and aggressively by means of suckers. It can encroach rapidly on overgrazed, trampled ground and on old lands where the grass cover has been removed. It is difficult to eradicate as it shoots again from portions of root. In certain situations, mechanical or chemical control measures are the only ways to control the potentially serious weed. A moderately slow-growing tree. The growth of the plants is very fast. For fuel wood plantations, dune stabilization, ravine reforestation, or erosion control, the spacing should be 3 x 5 metres. Dense plantings help stabilize gully plugs and check-dams. For soil conservation, the species should not be disturbed in any way. Its prolific root suckers will then provide natural spread for complete ground cover within a few years. The plant has moderately vigorous coppicing ability and can also be pollarded and lopped. A plant in the range of 7 - 8.5 cm collar diameter is suitable for coppicing, and the whole plant can be harvested 15cm above ground level. The number of regenerated shoots varies between 5 and 9, of which 2 - 3 branches attain better growth in height, diameter and biomass. To get maximum fuel biomass, the plants should be harvested at 10 years. An average yield of 22.8 tonnes (11.1 tonnes when dried) of firewood may be expected on the 6th year from 1 hectare of wasteland. Yields of about 1 kilo of seed pods per mature plant can be expected. A fire-resistant species. This species is very variable over its great range and has been subdivided into no less than 10 subspecies and many varieties. A favourite plant to train as a bonsai. This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby. Flowers mid summer.
Propagating it: Seed - A fraction of seeds exhibit polyembryony with usually 2, sometimes 3, or rarely more embryos; the extent of polyembryony seems to be positively correlated with the number of seed produced. Natural regeneration is strongest by root suckers. Within a period of 10 years, an individual of this species can produce 130 new stems in a radius of 15 m by its root suckers. Artificial propagation by transplanting root suckers or by using root cuttings is likewise the easiest and usually most successful method of propagation. Orthodox seed storage behaviour; little loss in viability during 26 years of hermetic storage at room temperature. Add ash to stored seed to reduce insect damage. Can be stored for up to 10 years at room temperature if kept dry and free from insects Direct sowing of seed is also possible. The freshly collected ripe seeds take long to germinate (15-20 days), mainly due to a thick seed coat. Scarified seeds give better germination, and a pre-treatment of 25 minutes in concentrated sulphuric acid gives optimum germination of 3-7 days for freshly collected seeds. Three-year-old seeds require only a 15-minute pre-treatment for optimum germination. Under controlled conditions, more than 75% germination may be expected. As soon as the pods ripen on the tree, they should be collected and the seeds taken out, dried and stored. This way, a reasonable amount of seeds could be saved from insect attack. About 1 million seeds/year are expected from a plant and most of the seeds are viable.
Best place to grow:
Habit: Shrub
Hardiness: 8-12
Growth: Medium
Soil: Light (sandy), medium, heavy (clay)
Shade: Semi-shade, no shade
Moisture: Moist
Things to keep in mind
Plant has spines or sharp edges; use extreme caution when handling
An undesirable weed and is particularly a problem in areas where there has been overgrazing. In the areas were it invades the species form very dense thickets making areas impenetrable. The species can regenerate from the smallest amount of root or through its root suckers. The seeds can survive for long periods of time in the soil as well as being able to withstand moderate frost. In Cuba, the use of mechanical control methods has been successful in reducing the area covered by D. cinerea, however, it is still a major problem in the country. As of yet there are no biocontrol agents being used although potential agents have been identified.
Its other names
Local names
Marabou Thorn, Sickle Bush, Princess Earrings, Kalahari Christmas Tree, Chinese latern tree, mazabu. Arzik, Bilatri, Bortuli, Chipangala, Evagia, Ithalala, Khairi, Kolai, Kunlai, Mkingiri, Moselesele, Muvilisya, Muwanika, N'talala, Odatare, Segum-kati, Sekelbos, Veltura, Vidattalai, Vurtuli, ami ogwu, dundu, kara, sickle bush, virtuli
Synonyms
Cailliea cinerea Macbride Cailliea dichrostachys Guill. & Perr. Cailliea nutans (Pers.) Skeels Dichr