From ancient Ayurvedic texts to peer-reviewed pharmacological research — a comprehensive exploration of the healing properties found in the flowers, leaves, bark, and roots of Sesbania grandiflora (Agathi / Agastya).
This article is for educational and informational purposes only. It is not intended as medical advice and should not replace consultation with qualified healthcare professionals. Traditional medicinal uses described here are based on historical ethnobotanical records and may not be validated by modern clinical trials. Always consult a physician before using any plant-based remedies.
Sesbania grandiflora (L.) Pers., known as agathi in Tamil, agastya in Sanskrit, turi in Indonesian, and katuray in Filipino, is far more than an ordinary agricultural tree. While most sesbania species are valued primarily for green manure and fodder, S. grandiflora occupies a unique position at the intersection of food, medicine, and agriculture — a true "food-as-medicine" plant that has been integral to healing traditions across South and Southeast Asia for millennia.
This tall, fast-growing tree (reaching 8-15 meters within 3-5 years) produces the largest flowers in the entire legume family — spectacular white, pink, or red blooms up to 10 cm long — along with pinnate leaves and long, slender pods. Every aerial part of the tree has documented medicinal uses, from the flowers and leaves consumed as vegetables to the bark and roots used in traditional preparations.
What makes S. grandiflora particularly compelling from a modern perspective is that many of its traditional medicinal claims have been corroborated by peer-reviewed pharmacological research over the past two decades. Studies published in journals such as the Journal of Ethnopharmacology, Phytomedicine, BMC Complementary and Alternative Medicine, and Food Chemistry have identified specific bioactive compounds responsible for the anti-inflammatory, antioxidant, hepatoprotective, and antimicrobial activities long attributed to this plant.
For information on growing this species, visit our Sesbania Grandiflora Seeds product page. For culinary uses of the leaves, see our Agathi Keerai Guide. For the complete sesbania genus overview, see our Complete Guide to Sesbania Seeds.
| Compound Class | Specific Compounds | Plant Part | Primary Activity |
|---|---|---|---|
| Flavonoids | Kaempferol, quercetin, myricetin, isovestitol | Leaves, flowers | Antioxidant, anti-inflammatory |
| Phenolic acids | Gallic acid, caffeic acid, ellagic acid, chlorogenic acid | Leaves, flowers, bark | Antioxidant, antimicrobial |
| Sterols | Beta-sitosterol, stigmasterol, campesterol | Leaves, seeds | Anti-inflammatory, cholesterol-lowering |
| Triterpenoids | Oleanolic acid, betulinic acid | Bark, leaves | Hepatoprotective, anti-tumor |
| Tannins | Condensed tannins, hydrolyzable tannins | Bark, leaves | Antimicrobial, astringent |
| Saponins | Various triterpenoid saponins | Leaves, bark | Immune modulation, anti-inflammatory |
| Alkaloids | Minor alkaloids (low concentration) | Bark, roots | Varied pharmacological activity |
| Vitamins | Ascorbic acid (C), beta-carotene (pro-A), tocopherols (E) | Leaves, flowers | Antioxidant, immune support |
| Minerals | Calcium, iron, zinc, magnesium, potassium | Leaves, flowers | Nutritional, enzymatic cofactors |
The synergistic interaction of these multiple compound classes is believed to account for the broad-spectrum medicinal activity of S. grandiflora. Modern research increasingly focuses on the flavonoid and phenolic acid fractions as the primary drivers of therapeutic effects.
In the Ayurvedic system of medicine — one of the world's oldest continuously practiced healing traditions — Sesbania grandiflora is known as "Agastya" (after the revered sage Agastya, who is credited with founding Siddha medicine). The tree is classified in the Ayurvedic pharmacopoeia with the following properties:
The cooling nature of S. grandiflora flowers makes them a primary Ayurvedic remedy for Pitta excess — conditions characterized by heat, inflammation, and burning sensations. Traditional preparations include:
Regular consumption of S. grandiflora leaves as a vegetable (agathi keerai) is considered a gentle Rasayana (rejuvenative) practice in Ayurveda, promoting longevity, improving digestion, strengthening immunity, and maintaining clear skin. This daily dietary use is perhaps the most widespread medicinal application of the plant.
In the Tamil-origin Siddha medical system, S. grandiflora is known as "Agathi" (அகத்தி) and holds special significance. Siddha texts describe the tree as one of the "pathiya unavu" (therapeutic foods) that simultaneously nourishes and heals.
In the Indonesian traditional medicine system known as Jamu, S. grandiflora (called "turi") is used in several standardized formulations:
In the Philippines, where the tree is called "katuray," traditional uses include:
Thai herbalists use S. grandiflora leaf and flower preparations for:
Anti-inflammatory activity is among the most well-documented pharmacological properties of S. grandiflora, with multiple peer-reviewed studies confirming this traditional use.
S. grandiflora demonstrates potent antioxidant activity across multiple assay systems, which is relevant to its traditional use in preventing aging, maintaining skin health, and general wellness.
The antioxidant activity of S. grandiflora is relevant to several health outcomes:
Multiple studies have documented the antimicrobial activity of S. grandiflora extracts against both gram-positive and gram-negative bacteria, as well as fungal pathogens.
| Pathogen | Plant Part Tested | Zone of Inhibition (mm) | Activity Level |
|---|---|---|---|
| Staphylococcus aureus (MRSA) | Bark methanol extract | 18-22 | Strong |
| Escherichia coli | Leaf ethanol extract | 14-18 | Moderate-strong |
| Pseudomonas aeruginosa | Flower methanol extract | 12-16 | Moderate |
| Bacillus subtilis | Leaf methanol extract | 20-24 | Strong |
| Salmonella typhi | Bark water extract | 15-19 | Moderate-strong |
| Candida albicans | Bark ethanol extract | 16-20 | Strong (antifungal) |
| Aspergillus niger | Leaf methanol extract | 12-15 | Moderate (antifungal) |
The antimicrobial activity validates traditional uses of S. grandiflora bark and leaf preparations for treating infections, wounds, oral thrush, and gastrointestinal infections. The tannin and phenolic acid content are considered the primary antimicrobial agents.
Several studies have demonstrated that S. grandiflora extracts protect the liver from toxic damage — a property known as hepatoprotection. This aligns with the traditional Siddha practice of using agathi for liver cleansing and detoxification.
Growing research evidence supports the traditional use of S. grandiflora leaves and flowers in managing blood sugar levels. This is particularly relevant given that Type 2 diabetes is a leading health concern in South and Southeast Asia, where the plant is most widely consumed.
Proposed mechanisms for the anti-diabetic effect include:
Leaf and flower extracts have shown analgesic activity in acetic acid-induced writhing and hot plate models in mice, supporting the traditional use for headaches and body pain.
A study published in the Journal of Pharmacy and Pharmacology (2010) reported anticonvulsant activity of S. grandiflora leaf methanol extract in pentylenetetrazol and maximal electroshock-induced seizure models, suggesting potential relevance to epilepsy management.
Methanolic leaf extract demonstrated anxiolytic activity in elevated plus maze and open field tests in animal models, reducing anxiety-related behaviors at doses of 200-400 mg/kg. This effect may be mediated through GABAergic mechanisms.
Traditional use of S. grandiflora as a mild diuretic (increasing urine output) has been confirmed in pharmacological studies, with leaf extract increasing urine volume by 40-60% in animal models.
Flower extract has shown gastroprotective effects in ethanol-induced ulcer models, reducing gastric lesion formation by 55-70%. The cytoprotective effect is attributed to enhanced mucus secretion and antioxidant-mediated protection of the gastric mucosa.
The nutritional composition of S. grandiflora leaves and flowers contributes directly to its medicinal value. The exceptional nutrient density makes it one of the most therapeutic food plants available.
| Nutrient | Amount | % Daily Value* | Health Relevance |
|---|---|---|---|
| Protein | 36.0 g | 72% | Muscle repair, immune function, enzyme production |
| Calcium | 1,130 mg | 113% | Bone health, nerve function, blood clotting |
| Iron | 8.4 mg | 47% | Anemia prevention, oxygen transport |
| Vitamin A (as beta-carotene) | 9,000+ IU | 180% | Night vision, immune function, skin health |
| Vitamin C (fresh) | 220 mg/100g fresh | 244% | Antioxidant, collagen synthesis, immune support |
| Phosphorus | 80 mg | 11% | Bone and teeth health, energy metabolism |
| Magnesium | ~150 mg | 38% | Muscle function, nervous system, blood sugar regulation |
| Fiber | ~12 g | 48% | Digestive health, blood sugar control, cholesterol lowering |
| Thiamine (B1) | 0.21 mg | 18% | Energy metabolism, nerve function |
| Riboflavin (B2) | 0.09 mg | 7% | Energy production, skin and eye health |
* Based on 2,000 calorie adult diet. Values from USDA, Indian Council of Medical Research, and published nutritional analyses.
The extraordinary calcium content — over 10 times that of cow's milk per unit weight — and the exceptional protein levels make agathi keerai one of the most nutrient-dense leafy greens in the world. For detailed culinary information, see our complete Agathi Keerai guide.
The large, showy flowers of S. grandiflora are the most widely used part in traditional medicine.
While Sesbania grandiflora has a long history of safe use as food and medicine, the following precautions should be observed:
The flowers, leaves, and young pods of S. grandiflora are consumed daily as vegetables by millions of people across South and Southeast Asia without reported adverse effects. There is an extensive history of safe dietary use spanning centuries.
Acute toxicity studies in animal models have shown that S. grandiflora leaf and flower extracts are non-toxic at doses up to 2,000 mg/kg body weight (well above any realistic human consumption level). No mortality or significant adverse effects were observed in 14-day and 28-day sub-acute toxicity studies at therapeutic doses.
To enjoy the medicinal and nutritional benefits of S. grandiflora, growing your own tree from seed is the most reliable approach. The tree is fast-growing and begins producing edible flowers and leaves within 9-12 months of planting.
For detailed planting instructions, see our How to Germinate Sesbania Seeds guide. Purchase certified S. grandiflora seeds from our product page. Also see the S. grandiflora cultivation guide.
Kohenoor International supplies premium S. grandiflora seeds with high germination rates. Plant your own source of this remarkable medicinal and nutritional tree.
Email: usman@kohenoorint.com Call: +92-310-4929292Kohenoor International | Hyderabad, Pakistan | Est. 1957 | 70+ Countries
S. grandiflora has been used for centuries in Ayurveda, Siddha, and Southeast Asian medicine. Key medicinal uses include: anti-inflammatory treatment (confirmed by research showing 62% inflammation reduction), antioxidant protection, hepatoprotective (liver protection) therapy, blood sugar regulation, antimicrobial treatment for infections, fever reduction, headache relief, nasal congestion treatment, wound healing, and as a nutritional supplement for anemia and bone health.
Yes. The flowers, young leaves (agathi keerai), and young pods are widely consumed as food by millions of people across India, Sri Lanka, Indonesia, Philippines, and Thailand. The leaves contain 36% protein, 1130mg calcium, and 220mg vitamin C per 100g. Acute toxicity studies confirm safety at doses far exceeding normal dietary consumption.
Yes, strongly. Peer-reviewed studies published in the Journal of Ethnopharmacology and Phytotherapy Research have demonstrated that S. grandiflora extracts reduce inflammation by 40-65% in standard models, comparable to pharmaceutical anti-inflammatory drugs. The active compounds include kaempferol, quercetin, beta-sitosterol, and oleanolic acid, which inhibit COX-2, NF-kB, and pro-inflammatory cytokines.
S. grandiflora leaves are among the most nutrient-dense leafy greens available: 36% protein (dry weight), 1,130 mg calcium per 100g dry weight (11x cow's milk), 8.4 mg iron, 9,000+ IU vitamin A, and 220 mg vitamin C per 100g fresh weight. They also provide significant B vitamins, phosphorus, magnesium, and dietary fiber.
In Ayurveda, S. grandiflora (Agastya) is classified as cooling (sheeta virya) and is used to balance Pitta dosha. Flowers treat nasal congestion, headaches, fever, and night blindness. Bark decoctions address cough, cold, and diarrhea. Leaf preparations serve as liver tonics and blood purifiers. Regular dietary consumption is considered a gentle Rasayana (rejuvenative) practice.
Tamil guide to S. grandiflora leaves — recipes, nutrition, cultivation
Buy certified seeds with high germination rates
Complete growing and management instructions
The ultimate pillar page covering all species
Scientific literature and technical data
Introduction to the genus and its significance