The Weed Koreans Call "Clown Herb" — And Its Even Better Nickname

 The Weed Koreans Call "Clown Herb" — And Its Even Better Nickname

광대나물 has two names in Korean.

The official one is 광대나물 — clown herb, or jester herb. 광대 means a traditional Korean clown or performer, the kind who wore extravagant, multicolored costumes and moved in exaggerated ways. The plant got this name because someone looked at the flowers erupting from the frilled, scalloped bracts and thought: that looks like a performer in full costume, arms spread wide.

The unofficial name, the one Korean children apparently use, is 코딱지나물. Booger herb.

I prefer the official name, but I understand the other one. The flowers do have a certain fleshy, bumpy quality up close.

 The Plant: 광대나물 (Lamium amplexicaule)

**Korean name:** 광대나물 (also 코딱지나물)  

**English common name:** Henbit Deadnettle, Henbit  

**Scientific name:** *Lamium amplexicaule* L.  

**Family:** Lamiaceae (꿀풀과)  

**Blooms:** March – May  

**Height:** 10–30cm  

**Native range:** Europe, Asia, North Africa; naturalized worldwide  

**Toxicity:** None. Edible throughout.

*Lamium amplexicaule* is an annual or winter annual herb in the mint family. The stems are square in cross-section — run a fingernail along one and you can feel the four edges, which is one of the definitive characteristics of the Lamiaceae family. The leaves are rounded with deeply scalloped edges, slightly hairy, and the upper leaves clasp the stem completely, forming a ring around it without any leaf stalk. This stem-clasping habit gives the species its name: *amplexicaule* is Latin for "stem-embracing."

The flowers are tubular, pink-purple, and emerge in whorls from the upper leaf axils — multiple flowers at each level, arranged in a ring around the stem. Each flower has the classic two-lipped structure of the mint family, with a hooded upper lip and a spreading lower lip. They're small, maybe 1.5cm long, but clustered densely enough to be visible from a distance.

 The Clown's Costume, and the Square Stem

The Lamiaceae family — the mint family — is one of the most reliably identifiable plant families in the Korean flora. The square stem is the key field marker, present across virtually all members: mint, basil, rosemary, lavender, sage, catnip, 꿀풀 (self-heal), and 광대나물 all share it. The square stem evolved in association with the opposite leaf arrangement — leaves paired directly across from each other at each node — and the two characteristics together become a quick field check once you know what you're feeling for.

광대나물 is also notable for having two kinds of flowers on the same plant — a fact that most people walking past it would never know. The visible tubular flowers that the bees visit are called chasmogamous flowers — open flowers that require pollinators. But the plant also produces cleistogamous flowers: closed, self-fertilizing flowers that never open, tucked lower on the stem, that produce seeds without any external help. When spring is cold and pollinators are scarce, the plant continues reproducing through these hidden flowers. It's a botanical insurance policy, and 광대나물 has been running it for a long time.

 What Bees Know That We Forgot

The English name "Henbit" comes from the observation that chickens would eagerly eat the plant — hens biting at it. The "Deadnettle" part distinguishes it from stinging nettles: this plant has nettle-shaped leaves but no sting whatsoever.

In Europe, foragers have eaten 광대나물 as a salad green and cooked vegetable for centuries. The flavor is mild, slightly earthy, faintly reminiscent of raw mushroom. Young leaves and stems can be eaten raw in salads, and the whole plant can be blanched and eaten as a cooked green. The flowers are also edible and were historically used to extract a small amount of nectar — children in many countries apparently learned that you could pull out the flower tube and lick the base for a tiny drop of sweetness.

In Korea, young leaves were gathered as a spring 나물 — blanched, seasoned, eaten as a side dish. The plant appears in records of Korean famine food: not a preferred green, but available, harmless, and nutritious enough to matter when other things weren't growing yet.

Modern nutritional analysis of the plant has found vitamin C, calcium, iron, and various phenolic compounds with antioxidant activity. It's more nutritious than its weed status would suggest.

In Korean and East Asian folk medicine, 광대나물 was used under the name 보개초 (寶蓋草) — "precious canopy herb," a name that describes the clasping leaves forming a canopy around the stem. It was used for blood circulation problems and joint complaints, reflecting the anti-inflammatory properties that have since been confirmed in phytochemical research.

 Finding It in the Field

광대나물 is one of the earliest spring plants in Korea, sometimes blooming through late February and March when the ground still has frost at night. It grows in gardens, cultivated fields, roadsides, forest edges, and anywhere the soil has been disturbed. It has no particular preferences beyond reasonable light and some moisture.

The identification is reliable once you know the combination: square stem, opposite rounded leaves with scalloped edges, upper leaves clasping the stem without stalks, pink-purple tubular flowers in whorls. The plant stays low and often spreads outward from the base. In good conditions it can cover considerable ground.

The smell is faintly minty — not as assertive as true mint, but the family connection is there if you crush a leaf and pay attention.

One note on lookalikes: 광대나물 is sometimes confused with 자주괴불주머니 (*Corydalis incisa*) when young and not yet flowering, as both produce somewhat similar scalloped leaves at ground level. Once either plant flowers, confusion is impossible — the flower structure is completely different. Before flowering, checking for the square stem and opposite leaf arrangement confirms 광대나물.

The booger nickname, for the record, refers to the small rounded flower buds before they open — clustered among the bracts, greenish and slightly bumpy. The comparison requires a certain imaginative willingness. Korean children apparently had it.

 ⚠️ Disclaimer

This blog documents Korean plants and their traditional uses for educational and cultural purposes only. Nothing here is medical advice. If you're considering foraging or using any wild plant, consult a qualified botanist or herbalist and verify identification through multiple reliable sources before doing anything with what you find.

*Photographed in Korea, April 2026. All field photography by The Korean Herbalist.*

**Tags:** 광대나물, Lamium amplexicaule, henbit deadnettle Korea, Korean spring weeds, edible Korean plants, 봄나물, Korean traditional medicine, 보개초, Lamiaceae Korea, Korean foraging