Ayurvedic Properties
- Taste (Rasa)
- Sweet (Madhura), Astringent (Kashaya)
- Quality (Guna)
- Light (Laghu), Unctuous (Snigdha)
- Potency (Virya)
- Cold (Sheeta)
- Post-digestive (Vipaka)
- Sweet (Madhura)
- Also Known As
- English: Thatch Grass, Kans Grass
Sanskrit: कास, काश, इक्षुपत्र, सूच्यग्र
Hindi: कास, काँस
What is Thatch Grass?
Some of Ayurveda's useful remedies grow on waste ground. Thatch Grass, also called Kans Grass, is a tall wild grass that looks like a thinner sugarcane, and its humble root is a classical cooling remedy for the urinary tract and for bleeding.
Its botanical name is Saccharum spontaneum, and its Sanskrit name is Kasa. It grows wild in many parts of India, especially near water and on waste land.
Do not confuse it with Kusha grass, the sacred grass. The two are often named together, and the Charaka Samhita lists them side by side as separate plants.
Benefits of Thatch Grass
Thatch Grass root tastes sweet and astringent (Madhura and Kashaya Rasa), has a cold potency (Sheeta Virya) and a sweet post-digestive effect (Madhura Vipaka). That profile makes it a natural calmer of Pitta, the dosha of heat and fire.
Urinary comfort
The Bhavaprakash Nighantu lists it as a diuretic (Mutrala). The root decoction is given for urinary complaints and burning on urination, a classic sign of excess heat.
Bleeding disorders
It is described as alleviating bleeding disorders (Raktapitta), conditions Ayurveda attributes to heated, aggravated blood. The cooling, astringent qualities explain the use.
Breast milk
Thatch Grass is also classed as a galactagogue (Stanyajanana), meaning it promotes breast milk.
Thirst
The Charaka Samhita includes thatch grass root in a cooling water for excessive thirst:
In the water prepared with sprouts of banyan, citrus medica, country willow, roots of sacrificial and thatch grass and liquorice and quench black earthen or black sand or pieces of new earthen vessel which have been heated up to red hot.
Charaka Samhita, Chikitsa Sthana 22 (Trishna Chikitsa)
How to Use Thatch Grass
The root is the medicinal part, and the classical form is a decoction (Kashaya): the root simmered in water and strained.
| Form | Dose | Best For | When to Take |
|---|---|---|---|
| Root decoction (Kashaya) | 1 to 2 tola (a classical unit of weight) | Urinary complaints, burning urination, bleeding disorders | As directed by a practitioner |
| Cooling thirst water (Charaka Samhita) | Root added with banyan sprouts, liquorice and other herbs | Excessive thirst | As directed by a practitioner |
Thatch Grass is rarely sold on its own outside India, so a practitioner is the most reliable route to authentic root.
Safety & Side Effects
The classical sources available to us record no specific contraindications or drug interactions for Thatch Grass. Its sweet, cooling and mild nature suggests a gentle herb, but that is not the same as proven safety.
Because it is a diuretic, check with a doctor if you already take diuretic medicine. Bleeding and burning urination can signal conditions that need medical diagnosis, so do not rely on a home decoction alone.
Recommended: Start Here
The simplest way to work with Thatch Grass is the way the classical texts describe: a root decoction, simmered in water and strained. It is the form recorded for urinary complaints and burning urination.
Because the root can be hard to find outside India, ask a qualified Ayurvedic practitioner to source it, or search for Kans Grass root and check that the label names Saccharum spontaneum, not Kusha grass.
Find Kans Grass Root on Amazon ↗ Saccharum Spontaneum ↗
Safety note: blood in the urine or any bleeding needs medical assessment first, and check with a doctor if you take diuretics.
Thatch Grass vs Other Herbs & Supplements
The comparisons people need most for Thatch Grass are with the plants it is grouped or confused with.
| Comparison | Thatch Grass | Alternative | Verdict |
|---|---|---|---|
| Thatch Grass vs Kusha Grass | Saccharum spontaneum (Kasa), a tall wild grass with a sweet, cooling root | Kusha grass, the sacred grass | Different plants that classical recipes often use together. Check the botanical name before you buy. |
| Thatch Grass vs Sugarcane | Thinner, wild, used for its root | Sugarcane, which it closely resembles | Related in appearance only. For urinary and bleeding uses, the classical text names the Thatch Grass root. |
| Thatch Grass vs Liquorice | Sweet, cooling root; diuretic | Liquorice, which appears beside it in the Charaka thirst recipe | Used together rather than as substitutes. Liquorice is far easier to buy. |
Thatch Grass for Specific Populations
Classical sources give little population-specific guidance for Thatch Grass, so take the cautious path.
Pregnancy & Nursing
The Bhavaprakash Nighantu classes it as a galactagogue, which promotes breast milk. Even so, no dose for nursing mothers is given, so use it only with a qualified practitioner's guidance. No pregnancy guidance is recorded.
Children
No dosing for children is given. Do not give it to a child without a practitioner's advice.
Elderly
No specific guidance is given. Its diuretic action means older adults on blood pressure or water tablets should check with their doctor.
Athletes
Classical sources say nothing specific about athletic use.
Frequently Asked Questions
Is Thatch Grass the same as Kusha grass?
No. Thatch Grass is Kasa (Saccharum spontaneum). Kusha is a separate sacred grass, and the Charaka Samhita names both in the same recipe as different plants.
Which part of Thatch Grass is used?
The root. Classical texts describe it as sweet and cooling and use it as a decoction.
Which dosha does Thatch Grass balance?
Pitta. Its sweet and astringent taste and cold potency counter heat, which is why it is used for burning urination and bleeding.
Where does Thatch Grass grow?
It grows wild across many parts of India, commonly near water and on waste land.
How to Use Kusha Grass by Condition
Explore how Kusha Grass is used for specific health concerns — with dosage, preparation methods, and classical references for each.
▶ Classical Text References (1 sources)
References in Charaka Samhita
In the water prepared with sprouts of banyan, citrus medica, country willow, roots of sacrificial and thatch grass and liquorice and quench black earthen or black sand or pieces of new earthen vessel which have been heated up to red hot.
— Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 22: Thirst Disorders Treatment (Trishna Chikitsa / तृष्णाचिकित्सा)
Source: Charaka Samhita, Chikitsa Sthana — Therapeutic Principles, Chapter 22: Thirst Disorders Treatment (Trishna Chikitsa / तृष्णाचिकित्सा)
Medical Disclaimer: The information on this page is for educational purposes only and is not intended as medical advice. Ayurvedic treatments should be pursued under the guidance of a qualified practitioner (BAMS/MD Ayurveda). Always consult your healthcare provider before starting any new treatment. Content is sourced from classical Ayurvedic texts and may not reflect the latest medical research.