Gliricidia sepium

Gliricidia sepium has long been employed by diverse communities as a gentle, drinkable remedy for fevers and colds, typically prepared as infusions of young leaves. In coastal Oaxaca and Veracruz, Mexico, this “te de lluvia” (rain tea) is made by steeping fresh leaves in hot water and drunk as a diaphoretic in the early stages of fever, a practice recorded by Aguilar Giron (1966). Across West Africa, leaf decoctions are also drunk as a wash for wounds or as an intake tea for febrile conditions, a use summarized by Kokwaro (1993) in his ethnobotanical compendium. On Hispaniola and Puerto Rico, Caribbean herbalists have long used a bark decoction as a diuretic and for inflammatory urinary complaints, documented by Morton (1994), while Hawaiian practitioners have prepared macerated bark as an antiseptic wash for cuts and sores, noted by Abbott and Shimazu (1985). These reports consistently specify the plant parts used—young leaves for teas, bark for decoctions and washes—and are supported by regional ethnobotanical sources.

For fever and colds, a mild leaf tea follows a simple procedure: pour 1 cup of just-boiled water over 1–2 fresh leaves, cover, and steep 10–15 minutes. Strain and sip one cup, up to twice daily, while watching for any sign of irritation. For wound or cut care, a bark decoction is commonly prepared by simmering 1 tablespoon of dried inner bark in 250 mL water for 20 minutes, cooling to lukewarm, and applying with clean gauze. As a tincture, a 1:5 (plant material:solvent by weight) ethanol maceration can be made by soaking 100 g of dried leaves in 500 mL of 45% ethanol for 4–6 weeks, shaking daily, and pressing; the resulting extract is used by some herbalists in microdoses (1–2 drops under the tongue) for sore throat and cold symptoms. Safety notes are essential: leaves are toxic in larger amounts and to livestock; the plant is considered teratogenic in some animal studies, so use during pregnancy or breastfeeding is strongly discouraged. All preparations should be topical or swallowed only in modest doses, and people with bleeding disorders should avoid additional tannins without professional guidance.

Phytochemically, Gliricidia sepium is rich in flavonoids—especially quercetin and kaempferol glycosides—and condensed tannins, which together contribute astringent and antioxidant effects that plausibly underlie its use for fevers, colds, and wound care. Several bioactive isoflavonoids are also known, and fractionated extracts display notable antibacterial activity; these compounds likely underpin the plant’s traditional reputation as an antiseptic wash. The bark’s elevated tannin content explains its astringent action on mucous membranes and minor bleeding.

Modern relevance remains active. Gliricidia sepium continues to be cultivated and maintained in home gardens and farm hedgerows throughout tropical America, parts of Africa, and the Pacific. Ongoing ethnobotanical surveys reaffirm these uses, and recent pharmacological studies support the activity of flavonoids and tannins found in the leaves and bark. While commercial products are rare in mainstream markets, tinctures and teas occasionally appear through community herbal suppliers and regional ethnobotanical initiatives, reflecting sustained interest in both practical preparation methods and ongoing research.

Wood and fiber:
Gliricidia sepium is a fast-growing tropical hardwood used for sawn timber, furniture, flooring, posts and poles, tool handles, and fuelwood. The sapwood is pale yellow to cream and the heartwood is reddish brown when seasoned; the wood is hard, dense (average around 0.6–0.75 g/cm³), straight- to interlocked-grained, and seasons well with moderate shrinkage. It has good strength properties and moderate natural durability when properly seasoned and protected; sapwood is susceptible to insects and decay but is readily treatable with preservatives. The species is also widely used in agroforestry for live fencing, shade, and posts cut on rotation.

Colorants and tanning:
Bark contains condensed tannins and is employed locally for leather tanning. The bark produces reddish-brown dye solutions suitable for natural dyeing of textiles and protein fibers.

Food and beverages (non-medicinal):
Leaves are used as fodder for ruminants in cut-and-carry systems, particularly in the dry season, and as green manure and mulch in cropping systems to improve soil fertility and moisture conservation.

Properties relevant to use:
Wood density in the range of approximately 0.6–0.75 g/cm³, hardness and favorable strength-to-weight ratio, and moderate natural durability (with good treatability) underpin its structural and utility uses. Tannins from bark confer tanning and dyeing functionality.

Standards and regulation:
Timber use is governed by national structural timber and grading standards; trade is subject to phytosanitary regulations and classification under applicable timber codes. Local tanning and leather processing comply with standards for leather quality (e.g., physical testing and chemical restriction lists). Treated poles and posts in construction are typically specified and certified by national or regional building codes.

Sustainability and sourcing:
G. sepium regenerates from coppice and seed, supporting short rotation fuelwood and posts. Seed is often collected from farmer-selected trees; nursery production and on-farm propagation are established, facilitating regeneration and reducing pressure on natural stands. Sustainable management typically involves managed rotations, avoided clear-felling of mature trees, and integration with cropping or livestock systems to enhance landscape-level diversity.

No subspecies added yet.

No variety added yet.

No subvariety added yet.

No forms added yet.

No germination or propagation data was added yet.

No distribution data was extracted from POWO/KEW yet. We are constantly monitoring for new data.

No known contributors. Be the first!

In private collections	0
In public collections	0

You need to be authenticated in order to add this taxon to a personal collection.