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1.Indian Laburnum — Overview
Indian Laburnum, scientifically known as Cassia fistula L. var. rhombifolia, is a magnificent deciduous tree celebrated for its striking ornamental and medicinal properties. Reaching impressive heights of up to 15-20 meters, this medium-sized tree is a spectacle, especially during its flowering season. Its most prominent feature is the abundance of bright yellow flowers, elegantly arranged in cascading clusters that can extend up to 60 centimeters in length, earning it the common name 'Golden Shower Tree'. Each individual flower measures approximately 5-6 centimeters, showcasing five distinct petals forming a classic butterfly-like shape, characteristic of the Fabaceae family.
The foliage of the Indian Laburnum consists of pinnate leaves, typically composed of 6-8 pairs of oblong leaflets. These leaflets, measuring 5-9 centimeters long, are a rich dark green, contributing to the tree's dense and lush canopy. The bark of young trees is smooth and grayish-brown, gradually developing fissures and a rougher texture as the tree matures. This species is indigenous to the tropical regions of South Asia, with its natural habitat spanning countries such as India, Bangladesh, Sri Lanka, and parts of Myanmar. It thrives in dry, deciduous forest ecosystems and demonstrates remarkable adaptability, often flourishing in disturbed landscapes, along roadsides, and in open fields. It shows a preference for well-drained, sandy loam soils, tolerating a range of soil types provided there is adequate drainage.
Taxonomically, Cassia fistula belongs to the vast and economically significant Fabaceae family, also known as the legume family, which includes a diverse array of species from food crops to timber trees. Beyond its aesthetic appeal, the Indian Laburnum holds profound historical and cultural significance across various South Asian cultures. Its vibrant blossoms are often associated with festivals and religious ceremonies, symbolizing prosperity and good fortune. In traditional medicinal systems like Ayurveda, Siddha, Unani, and Traditional Chinese Medicine (TCM), different parts of the tree, particularly its fruit pulp, bark, and leaves, have been utilized for centuries due to their purported therapeutic benefits. Adding to its distinct characteristics, the tree produces long, cylindrical, woody pods that can grow up to 60 centimeters in length and about 2.5 centimeters in diameter.
Trusted Scientific References
Authoritative external sources for Cassia Fistula L. Var. Rhombifolia:
1.1.Indian Laburnum — Defining Traits
- ✓Botanical Name — Cassia fistula L. var. rhombifolia, commonly known as Indian Laburnum or Golden Shower Tree.
- ✓Family — Belongs to the Fabaceae (legume) family, known for its diverse and economically important species.
- ✓Deciduous Tree — A medium-sized deciduous tree, typically growing 15-20 meters tall, shedding leaves seasonally.
- ✓Striking Yellow Flowers — Produces spectacular, long, pendulous clusters of bright yellow flowers, a prominent ornamental feature.
- ✓Long Pods — Develops distinctive long, cylindrical, dark brown to black pods, up to 60 cm in length, containing seeds embedded in a sweet pulp.
- ✓Native Range — Indigenous to tropical South Asia, including India, Bangladesh, and Sri Lanka.
- ✓Traditional Medicinal Use — Widely used in Ayurvedic, Unani, Siddha, and other traditional healing systems.
- ✓Natural Laxative — Fruit pulp is a primary source of a mild, effective natural laxative, attributed to anthraquinone glycosides.
- ✓Rich in Phytochemicals — Contains a broad spectrum of bioactive compounds including flavonoids, phenolic acids, terpenoids, and saponins.
- ✓Antioxidant Properties — Possesses significant antioxidant capacity, combating oxidative stress and cellular damage.
- ✓Anti — inflammatory Effects — Exhibits potent anti-inflammatory actions, useful for various inflammatory conditions.
- ✓Nutritional Value — Fruit pulp is a good source of essential minerals (K, Ca, Fe, Mn) and amino acids (aspartic, glutamic, lysine).
- ✓Cultural Significance — Holds cultural and religious importance in its native regions, often symbolizing prosperity.
- ✓Ecological Role — Contributes to local ecosystems as a shade tree and provides habitat, thriving in dry deciduous forests.
1.2.Indian Laburnum — Snapshot Summary
- ✓Indian Laburnum (Cassia fistula) is a tropical deciduous tree known for its stunning yellow flowers.
- ✓Traditionally used in Ayurveda, Unani, and other systems for diverse medicinal purposes.
- ✓Its fruit pulp is a well-regarded natural laxative, rich in anthraquinone glycosides.
- ✓Contains potent antioxidants, anti-inflammatory compounds, and essential minerals.
- ✓Used to support digestive health, reduce inflammation, and provide nutritional benefits.
- ✓Requires careful dosage and is contraindicated in pregnancy, lactation, and intestinal obstruction.
- ✓Valued culturally and ecologically as an ornamental and medicinal species.
2.Indian Laburnum — Scientific Identity
3.Indian Laburnum — Categories & Tags
4.Indian Laburnum — Structural Profile
5.Indian Laburnum — Ethnobotanical Uses
6.Indian Laburnum — Bioactive Constituents
- ✓Anthraquinone Glycosides — Key compounds like sennosides, rhein, emodin, and chrysophanol are primarily responsible for the potent laxative effect of the fruit pulp, stimulating colonic peristalsis.
- ✓Flavonoids — Quercetin, kaempferol, and their glycosides are abundant, contributing significantly to the plant's antioxidant, anti-inflammatory, and potentially hepatoprotective activities.
- ✓Phenolic Acids — Gallic acid, caffeic acid, and ferulic acid are present, acting as powerful antioxidants and playing a role in the plant's anti-inflammatory and antimicrobial properties.
- ✓Terpenoids — Various triterpenes and diterpenes have been identified, which may contribute to the plant's anti-inflammatory, analgesic, and antimicrobial effects.
- ✓Alkaloids — While less prominent than other classes, trace amounts of alkaloids are found, potentially influencing some of the plant's pharmacological actions.
- ✓Saponins — Present in various parts, saponins may contribute to immune modulation, anti-inflammatory, and cholesterol-lowering effects.
- ✓Tannins — Found in the bark and leaves, tannins exhibit astringent, antioxidant, and antimicrobial properties, useful in wound healing and digestive health.
- ✓Gums and Mucilage — These polysaccharides contribute to the bulk-forming laxative effect and may have soothing properties for the digestive tract.
- ✓Carbohydrates — The fruit pulp contains a significant amount of sugars and dietary fiber, contributing to its energy content and bulk laxative action.
- ✓Amino Acids — The fruit pulp is rich in essential amino acids such as aspartic acid, glutamic acid, and lysine, vital for protein synthesis and overall human nutrition.
- ✓Minerals — High concentrations of potassium (K), calcium (Ca), iron (Fe), and manganese (Mn) are found in the fruit pulp, providing essential micronutrients for various physiological functions.
- ✓Steroids — Phytosterols like beta-sitosterol have been isolated, potentially contributing to anti-inflammatory and hypolipidemic effects.
- ✓Volatile Oils — Present in minor quantities, these compounds can contribute to the plant's aroma and some mild antimicrobial or insecticidal properties.
7.Indian Laburnum — Modern Studies
- ✓Natural Laxative — The fruit pulp of Indian Laburnum is widely recognized for its gentle yet effective laxative properties, attributed primarily to its anthraquinone glycosides which stimulate peristaltic movement in the intestines, aiding in constipation relief.
- ✓Anti-inflammatory Support — Extracts from various parts of Cassia fistula, including leaves and bark, have demonstrated significant anti-inflammatory activity, potentially by inhibiting pro-inflammatory mediators and pathways, offering relief from inflammatory conditions.
- ✓Antioxidant Protection — Rich in flavonoids, phenolic acids, and other phytochemicals, Indian Laburnum exhibits potent antioxidant capabilities, helping to neutralize free radicals and mitigate oxidative stress, thereby protecting cells from damage.
- ✓Digestive Health Enhancement — Beyond its laxative effect, the plant supports overall digestive well-being by promoting healthy bowel function and potentially soothing gastrointestinal discomfort, contributing to a balanced gut environment.
- ✓Immune System Modulation — Traditional uses suggest immune-boosting properties, with certain compounds potentially enhancing the body's defense mechanisms and supporting a robust immune response against pathogens.
- ✓Antipyretic Action — Traditionally, Indian Laburnum has been employed to reduce fever, with its compounds believed to possess properties that help regulate body temperature and alleviate febrile symptoms.
- ✓Antimicrobial Properties — Studies indicate that extracts from Cassia fistula possess antimicrobial activity against various bacteria and fungi, suggesting its potential in combating infections and supporting wound healing.
- ✓Wound Healing Acceleration — The application of pastes or extracts from the plant has been traditionally used to promote faster healing of wounds and skin lesions, possibly due to its anti-inflammatory and antimicrobial effects.
- ✓Skin Health Improvement — Due to its anti-inflammatory, antioxidant, and antimicrobial properties, Indian Laburnum is traditionally used in remedies for various skin conditions, helping to reduce irritation and promote clearer skin.
- ✓Nutritional Enrichment — The fruit pulp is a valuable source of essential minerals such as potassium, calcium, iron, and manganese, along with important amino acids like aspartic acid, glutamic acid, and lysine, contributing significantly to daily nutritional requirements.
- ✓Blood Sugar Regulation — Preliminary research and traditional practices suggest a potential role for Cassia fistula in supporting healthy blood sugar levels, making it of interest in the management of metabolic conditions.
- ✓Hepatoprotective Effects — Some studies indicate that certain compounds in the plant may offer protective benefits to the liver, supporting its detoxification processes and overall health.
- ✓Analgesic Properties — Traditionally, the plant has been used to alleviate pain, suggesting mild analgesic effects that could contribute to relief from various bodily discomforts.
- ✓Anti-diabetic Potential — In traditional medicine, it is used to manage symptoms related to diabetes, with ongoing research exploring its mechanisms in glucose metabolism regulation.
- ✓Respiratory Support — Certain preparations are traditionally used to help alleviate symptoms of respiratory ailments, potentially due to anti-inflammatory or mucolytic actions.
- ✓Anti-arthritic Action — The anti-inflammatory compounds present in Cassia fistula may contribute to its traditional use in alleviating symptoms associated with arthritis and joint pain.
7.1.Indian Laburnum — Indications & Uses
8.Indian Laburnum — Risk Profile
8.1.Indian Laburnum — Possible Adverse Reactions
- ✓Abdominal Cramping — Common with higher doses, particularly when used for its laxative effects, leading to discomfort.
- ✓Diarrhea — Excessive consumption of the fruit pulp can induce severe diarrhea, potentially leading to dehydration and electrolyte imbalance.
- ✓Nausea and Vomiting — Some individuals may experience gastrointestinal upset, including feelings of nausea or episodes of vomiting, especially with raw preparations.
- ✓Electrolyte Imbalance — Prolonged or excessive use as a laxative can deplete essential electrolytes like potassium, affecting heart and muscle function.
- ✓Allergic Reactions — Sensitive individuals may experience allergic responses such as skin rashes, itching, or respiratory symptoms.
- ✓Dehydration — Severe diarrhea caused by overuse can lead to significant fluid loss and dehydration, which requires immediate medical attention.
- ✓Drug Interactions — May interact with certain medications, including diuretics, corticosteroids, and cardiac glycosides, altering their efficacy or increasing adverse effects.
- ✓Hypoglycemia — In individuals with diabetes, it might potentially lower blood sugar, necessitating careful monitoring, especially if combined with anti-diabetic medications.
- ✓Kidney Dysfunction — Long-term, high-dose use of anthraquinone-containing laxatives has been theoretically linked to potential kidney issues, although rare.
8.2.Indian Laburnum — Toxicity Assessment
- ✓Pregnancy and Lactation — Contraindicated during pregnancy due to potential uterine stimulating effects and should be avoided during lactation as compounds may pass into breast milk.
- ✓Children — Not recommended for young children, especially for laxative purposes, without strict medical supervision due to risk of dehydration and electrolyte imbalance.
- ✓Intestinal Obstruction — Absolutely contraindicated in cases of intestinal obstruction, acute inflammatory bowel disease (Crohn's, ulcerative colitis), appendicitis, or unexplained abdominal pain.
- ✓Dehydration Risk — Individuals with pre-existing dehydration or electrolyte disturbances should avoid use, particularly as a laxative.
- ✓Drug Interactions — Caution is advised for patients on diuretics, corticosteroids, cardiac glycosides, or anti-diabetic medications due to potential interactions.
- ✓Dosage Adherence — Adhere strictly to recommended dosages; chronic overuse, particularly of the laxative fruit pulp, can lead to dependency and severe electrolyte imbalance.
- ✓Medical Consultation — Always consult a healthcare professional before using Indian Laburnum, especially if you have underlying health conditions or are on other medications.
- ✓Long-term Use — Prolonged use as a laxative is discouraged as it can lead to 'lazy bowel syndrome' and dependency.
- ✓Allergic Sensitivity — Individuals with known allergies to plants in the Fabaceae family should exercise caution.
- ✓Quality Source — Ensure plant material is sourced from reputable suppliers to avoid contamination or misidentification.
9.Indian Laburnum — Application Forms
- ✓Fruit Pulp Decoction — The mature fruit pulp is simmered in water to create a decoction, traditionally consumed orally as a mild laxative for constipation relief.
- ✓Bark Powder — Dried and powdered bark can be mixed with honey or water and taken internally for its anti-inflammatory and antipyretic properties.
- ✓Leaf Paste for Skin — Fresh leaves are crushed and made into a paste, applied topically to soothe skin irritations, treat ringworm, or aid in wound healing.
- ✓Flower Infusion — Dried or fresh flowers can be steeped in hot water to make an infusion, sometimes used for its mild laxative or cooling effects.
- ✓External Application for Joint Pain — A poultice made from the leaves or bark is applied externally to painful joints to alleviate inflammation and discomfort.
- ✓Ayurvedic Formulations — The fruit pulp is a key ingredient in numerous Ayurvedic preparations, often combined with other herbs to enhance its therapeutic actions for digestive and general wellness.
- ✓Topical Oil Infusion — Flowers or leaves can be infused in a carrier oil (like sesame oil) and used for massage to relieve muscular aches or improve skin conditions.
- ✓Oral Consumption of Fruit — The sweet pulp of the ripe fruit can be eaten directly, offering both nutritional benefits and a gentle laxative effect.
- ✓Gargle for Throat Issues — A decoction of the bark or leaves can be used as a gargle to soothe sore throats or oral inflammations.
- ✓Seed Paste — In some traditional practices, seeds are ground into a paste for specific topical applications, though less common due to potential toxicity if ingested.
- ✓Medicated Ghee — The plant's extracts can be incorporated into medicated ghee (clarified butter) for internal administration, enhancing bioavailability and specific therapeutic outcomes.
- ✓Hair Care — Infusions of leaves are occasionally used as a rinse to promote scalp health and address certain hair conditions.
10.Indian Laburnum — Propagation & Care
- ✓Climate Preference — Thrives in tropical and subtropical climates, requiring warm temperatures and intolerant to frost, which can severely damage or kill the tree.
- ✓Sunlight Requirements — Prefers full sun exposure for optimal growth and abundant flowering, needing at least 6-8 hours of direct sunlight daily.
- ✓Soil Conditions — Adaptable to various soil types but performs best in well-drained, fertile, sandy loam soils with a pH range of 6.0 to 7.5.
- ✓Watering Regime — Requires regular watering, especially during its establishment phase and dry periods. Once mature, it is moderately drought-tolerant but benefits from occasional deep watering.
- ✓Propagation — Primarily propagated by seeds, which benefit from scarification or soaking to break dormancy, or by semi-hardwood cuttings.
- ✓Fertilization — Benefits from annual application of balanced organic fertilizer or compost, particularly before the flowering season, to support vigorous growth and bloom production.
- ✓Pruning — Minimal pruning is required, mainly for shaping, removing dead or diseased branches, and maintaining a strong structure, typically done after flowering.
- ✓Pest and Disease Management — Generally robust, but can be susceptible to common pests like aphids or scale insects and fungal diseases in overly wet conditions; requires integrated pest management.
- ✓Growth Rate — Exhibits a moderate to fast growth rate under ideal conditions, quickly developing into a substantial shade or ornamental tree.
- ✓Harvesting — Flowers can be collected when in full bloom, leaves as needed, and fruit pods when they mature and turn dark brown to black, typically in late spring to summer.
- ✓Landscape Use — Widely planted as an ornamental street tree, in parks, and gardens for its spectacular floral display, also valued for its shade.
- ✓Container Growing — Young plants can be grown in large containers, but will eventually require transplanting to the ground due to their mature size.
Reviewed by the Flora Medical Global Botanical Review Panel
Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature
Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.
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Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.
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Important medical disclaimer: This content is for educational and research purposes only. It is not medical advice and is not a substitute for consultation with a licensed healthcare provider. Do not use any herb to self-treat a medical condition without professional guidance.
Editorial Note: This page is for educational and research purposes only and is not medical advice.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 28, 2026
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