Corn Silk Profile
Corn Silk
Zea mays
For easy flow, daily ease and gentle cleansing.
Herbal Intelligence
Understanding Corn Silk
Corn Silk (Zea mays) is the tuft of fine, glossy threads at the tip of an ear of corn, the plant first grown as a crop in Mexico and Central America. The silks have been dried and brewed as a mild tea for generations, in the Americas, in China and in Europe.
The taste is light and faintly sweet, with a hint of fresh corn. Most people take Corn Silk as a tea, on its own or in a blend, and it is the herb our customers reach for when they want a gentle cup to sip through the day while they keep their fluids up.
Cultural use
Corn Silk is the long, soft stigmas of the female maize flower, gathered just before pollination and used fresh or dried(1). Maize was first cultivated in Mexico, and the silk went wherever the crop did. Native American peoples and Chinese herbal tradition both made use of it(1).
In European pharmacy it was known by its Latin name, Stigma maydis. A liquid extract of maize stigmas appears in the British Pharmaceutical Codex of 1923, and Polish herbal texts of the 1950s describe an infusion of the silk drunk through the day, a custom said to have come from France(2).
It is still used as a household tea in Turkey, France and the United States(1), and in 2025 the European Medicines Agency's herbal committee published a draft monograph on Corn Silk tea(2).
Phytochemistry
Corn Silk contains flavonoids, chiefly maysin and its relatives, along with potassium and other mineral salts, plant sterols such as sitosterol and stigmasterol, volatile oils and saponins(1). The flavonoids are the compounds most studied in laboratory research(1), though European regulators note that no single constituent has been identified as the active one(2).
Modern herbal use
In Western herbalism Corn Silk is classed as a demulcent and a gentle diuretic: a soft, soothing herb associated with the urinary system. Herbalists often blend it with Marshmallow, Uva Ursi or Dandelion.
People drink it as an everyday tea, usually two or three cups spread through the day alongside plenty of water. Its mildness is the point: it is a herb for sipping.
The European Medicines Agency's draft assessment accepts Corn Silk tea on the basis of long-standing use, and found no clinical trials of it for that purpose(2). Most published research is laboratory and animal work(1), so we describe how it is used, not what it will do.
Developed and reviewed by Laura Grace, Owner and Creative Director of Happy Herb Co, Herb Educator and Registered Ayurvedic Lifestyle Consultant · Clinically reviewed by Tamara Welsh, BSc, AdvDipWHM, ATMS, Clinical Herbalist
This profile is intended as a researched educational guide and does not replace the broader perspective of a herbal consultation.
Sources
- Hasanudin, K., Hashim, P., & Mustafa, S. (2012). Corn silk (Stigma maydis) in healthcare: A phytochemical and pharmacological review. Molecules, 17(8), 9697-9715. https://doi.org/10.3390/molecules17089697
- European Medicines Agency, Committee on Herbal Medicinal Products. (2025). Assessment report on Zea mays L., stigma (draft) [EMA/HMPC/509423/2023]. https://www.ema.europa.eu/en/documents/herbal-report/draft-assessment-report-zea-mays-l-stigma_en.pdf
In everyday life
Connect with Corn Silk
How it's used
Corn Silk is taken as a tea, in three ways.
- Tea. Steep 1 to 2 teaspoons of dried Corn Silk in a cup of just-boiled water, covered, for 10 minutes, then strain. The flavour is light and faintly sweet. It can be drunk up to three times a day.
- In a blend. Corn Silk softens stronger herbs, and is often combined with Marshmallow, Uva Ursi or Dandelion in the pot.
- Fresh silk. The silk from a fresh cob can be brewed the same way, or dried for later.
Corn Silk tea is usually drunk through the day, with plenty of water.
A Moment with Corn Silk
The part we throw away.
Take a pinch of the fine golden threads. Every strand once ran from a single kernel to the tip of the cob, carrying pollen down to it. Most of us strip it off and never look.
Steep a teaspoon or two for ten minutes, or use the silk from a fresh cob at dinner. The flavour is light and faintly sweet, hardly there.
Sip slowly. Usefulness is not always obvious. What have you been discarding, in your days or in yourself, without looking at it properly?
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Corn Silk, ready to use
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FAQ
Corn Silk: frequently asked questions
What is Corn Silk?
Corn Silk is the tuft of fine threads at the tip of an ear of corn (Zea mays). The threads are the stigmas of the female flower. Corn Silk has been dried and brewed as a mild tea for generations in the Americas, China and Europe, and today it is mostly taken as a tea.
What is Corn Silk tea good for?
Corn Silk tea is long associated with the urinary system. Native American peoples and Chinese herbal tradition both made use of it, and Western herbalists class Corn Silk as a demulcent and a gentle diuretic. European regulators found no clinical trials of the tea, and most published research is laboratory and animal work, so we describe how it is used, not what it will do.
When should I use Corn Silk for urinary support?
Corn Silk is best known as a herb people reach for when they want a gentle cup to sip through the day while they keep their fluids up. Most people drink two or three cups alongside plenty of water, often blended with herbs such as Marshmallow, Uva Ursi or Dandelion.
How do you make Corn Silk tea?
Steep 1 to 2 teaspoons of dried Corn Silk in a cup of just-boiled water, covered, for 10 minutes, then strain. Corn Silk tea can be drunk up to three times a day. The silk from a fresh cob can be brewed the same way, or dried for later.
Does Corn Silk contain caffeine?
No. Corn Silk is naturally caffeine free, so the tea can be sipped at any time of day. It is one of the mildest herbal teas: light, faintly sweet and pale gold in the cup, with a hint of fresh corn.
What is the best time to drink Corn Silk tea?
There is no set time. Corn Silk tea is usually spread through the day, two or three cups alongside plenty of water, and Polish herbal texts of the 1950s describe it drunk the same way. Because Corn Silk is classed as a gentle diuretic, some people prefer to have their last cup well before bed.
Who should not take Corn Silk?
Take care if you combine Corn Silk tea with corticosteroid medicines or with anticoagulant (blood-thinning) medicines. If you take medication or have a health condition, check with your health professional first.
Precautions
Caution combining Corn Silk with corticosteroid and anticoagulant drugs.
Cited Herbal Actions
As described in the monographs cited under Sources.
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