Stinging Nettle: History and Traditional Use
Almost nobody has to be taught what a nettle is; the plant introduces itself. Yet the same weed that stings the ankles of every European child has one of the longest and strangest working lives of any plant in the human record. People wove it into cloth in the Bronze Age, ate it every spring, flogged their aching joints with it on purpose, spun it into wartime uniforms, boiled it through famines, and finally put it under the microscope to find out what the sting is made of. This article follows Urtica dioica from a 2,800-year-old burial cloth in Denmark, through Pliny and the Anglo-Saxon charms, to the European monographs and the clinical trials of recent decades. Where a story is folklore rather than record, we say so.
Table of Contents
- Origins, Botany and Two Burning Names
- Nettle Cloth: From the Bronze Age to the First World War
- Dioscorides, Pliny and the Roman Nettle
- The Nine Herbs Charm and the Medieval Kitchen Garden
- Beating Yourself Better: The Long Tradition of Urtication
- Spring Soup, Famine Food and the Wartime Pot
- What Is Actually in the Sting: 1947 to 2006
- From Folk Remedy to Monograph: Commission E, ESCOP and the EMA
- Tradition, Evidence and the Nettle Today
- Key Research Papers
- Connections
- Featured Videos
Origins, Botany and Two Burning Names
Stinging nettle, Urtica dioica, is a tall herbaceous perennial of the nettle family, Urticaceae. It is native across Europe, temperate Asia and North Africa, and it follows people wherever they enrich the ground: it thrives on the nitrogen and phosphate left by old middens, byres and abandoned farmsteads, which is why archaeologists half-joke that a nettle bed is a sign that somebody once lived there. Nettle was never a rare herb that had to be sought out; it grew at the door.
The plant spreads by tough yellow rhizomes (underground stems) and forms dense stands a metre or two high. Its flowers are small, green and wind-pollinated, and the male and female flowers usually grow on separate plants — hence the species name dioica, from the Greek for "two households." The genus name is older and blunter. Urtica is the ordinary Latin word for the plant, formed from urere, "to burn," a name the Romans coined from experience. The English word has a different and less certain pedigree: nettle comes from Old English netele, from a Proto-Germanic root that also gives German Nessel and Dutch netel. Its deeper origin is unknown. Etymologists have suggested a link to an ancient root meaning "to bind or tie," which would make "nettle" a cousin of "net" and a memory of its use as a fibre — an attractive idea, but a suggestion rather than a settled fact.
Other nettles share the name and some of the history. The small nettle, Urtica urens, is a shorter annual weed that stings just as fiercely and is treated as interchangeable with U. dioica in the European monographs; the Roman nettle, Urtica pilulifera, is a Mediterranean species long cultivated in Britain and bound up with the folklore below. The white dead-nettle, Lamium album, looks similar but belongs to the mint family and does not sting — a fact a twentieth-century clinical trial would put to elegant use.
Nettle Cloth: From the Bronze Age to the First World War
The oldest firmly documented chapter in nettle's history is not medicine but textiles. In 2012 Danish and British researchers published in Scientific Reports a fibre analysis of a cloth from Lusehøj on Funen, Denmark's richest known Bronze Age burial mound. Around 800 BCE a man of high status had been cremated and his bones wrapped in a fine textile inside a bronze urn. The cloth had long been assumed to be flax; microscopy showed that it was nettle. More surprising still, the strontium isotopes in the fibres — a chemical signature plants take up from the local geology — did not match Danish soils. The authors concluded that the nettle had most probably been grown in central Europe, in the same Austrian region (Kärnten–Steiermark) as the bronze urn itself, an area that already had a flax industry. Their cautious interpretation was that a nettle textile could be a deliberate luxury rather than a poor man's substitute, and that fine cloth travelled the same long-distance routes as bronze.
Nettle cloth recurs after that: a Swiss nettle textile is dated to the seventh century CE, and a British document of 1391 speaks of "nettlecloth." Stems were retted (soaked until the soft tissue rotted away), broken and spun much as flax was, and the craft lived long enough in Scandinavian memory to become literature: in Hans Christian Andersen's fairy tale The Wild Swans, published in 1838, the heroine Elisa must gather stinging nettles from a churchyard and knit them, blistering her hands and keeping silent, into eleven shirts that will turn her enchanted brothers back into men.
Germany and Austria began experimental cultivation of nettle as a fibre crop from about 1850. The best-known episode is the First World War: the Allied blockade cut the Central Powers off from imported cotton and wool, and German authorities organised the collection of wild nettle — schoolchildren were paid by weight for the stems — and blended the fibre into military textiles. It is true that German soldiers wore nettle; but the story is frequently overstated. Nettle was one of several substitute fibres blended into cloth, and the peer-reviewed literature gives no reliable figure for what share of the army's cloth it made up: a real, organised wartime expedient, not a nettle-clad army. In the 1920s the German breeder Gustav Bredemann began selecting high-fibre nettle clones, work that continued through the Second World War; after 1945 cheap cotton and synthetics ended it, and only in the last two decades has nettle been replanted as a sustainable fibre.
Dioscorides, Pliny and the Roman Nettle
By the first century CE nettle was firmly in the Greek and Roman pharmacopoeia. Pedanius Dioscorides, the Greek army physician whose De Materia Medica (about 50–70 CE) remained Europe's standard drug book for fifteen centuries, treats it under its Greek name akalyphe. Dioscorides used the leaves, seed and root: leaves with salt as a poultice for dog bites and foul ulcers; the juice for nosebleeds; the seed, taken with honey or sweet wine, for chest complaints; the whole plant cooked as a laxative food. He also credits the seed with stirring sexual desire, a belief that would attach to nettle for a very long time.
Pliny the Elder, in his Natural History (Book 22), opens his nettle chapter with the plant's reputation rather than its virtues: Urticae quid esse invisius potest? — "What can be more hateful than the nettle?" And yet, he goes on, it teems with remedies. He reports that an oil was made from it in Egypt; that the seed, on the authority of the Greek poet-physician Nicander, was an antidote to hemlock, poisonous fungi and quicksilver; that the leaf with salt healed dog bites; that the juice on the forehead staunched nosebleeds; and that the pounded root in vinegar was given for diseases of the joints and spleen. One sentence matters for what came later: people sunk in lethargy, Pliny writes, are roused by touching their legs, and especially their forehead, with nettles — the earliest clear literary record of using the sting itself as a treatment, the practice later called urtication.
The Romans were also eating the plant: the young tops boiled as a spring vegetable appear in Roman and later Byzantine sources. What the Romans did not do, so far as any contemporary source shows, is march into Britain flogging themselves with nettles to keep warm. That story — that the Roman nettle Urtica pilulifera was brought over by legionaries for the purpose — is a much later piece of English folklore, repeated in nearly every popular account and unverified. The Roman nettle was certainly grown in Britain for centuries, but nobody knows who brought it or why.
The Nine Herbs Charm and the Medieval Kitchen Garden
The most evocative early-medieval record of nettle is the Anglo-Saxon Nine Herbs Charm, preserved in a single manuscript, British Library Harley MS 585, the remedy collection known as the Lacnunga, of the late tenth or early eleventh century. The charm is an incantation sung over nine plants that are then pounded into a salve against poison and infection; it names the god Woden alongside Christ, and is one of the clearest surviving glimpses of pre-Christian healing folded into a Christian manuscript. Nettle is generally identified as the herb the charm calls stiðe, "the stiff one," which "withstands venom" and "drives out the hostile one." Some of the nine names are still debated, so the identification is probable rather than certain, but the picture — nettle as a plant that fights poison and infection, pounded into an ointment — matches what Dioscorides and Pliny had written centuries earlier.
Through the medieval and early-modern centuries nettle settled into the household book of remedies. It was gathered rather than grown, taken in spring as a "blood-cleansing" pottage or tea, used as a hair wash, brewed as a diuretic (a preparation that increases the flow of urine), and given for coughs, bleeding and the "gravel" of the urinary tract. These were the indications the herbals repeated from one another, and the regulators of the twentieth century would find them written in essentially the same words. They are recorded here as tradition: a long tradition shows a plant was valued, not that it worked. Folk belief clung to it too: nettle seed was still, as in Dioscorides, held to be an aphrodisiac, and the old saying that three nettles eaten in May keep all diseases away survived into the twentieth century.
Beating Yourself Better: The Long Tradition of Urtication
The strangest traditional use of nettle is the deliberate one. Urtication — a medieval Latin coinage from urtica — means striking or rubbing the skin with fresh nettles on purpose, a recognised remedy in European folk and learned medicine for at least two thousand years. Pliny's lethargic patients, roused by nettles laid on their legs and forehead, are its first record. Later it was applied above all to rheumatism, sciatica and chilled or paralysed limbs: the idea, in the humoral language of the time, was that the sting drew heat and blood to a cold, stagnant part. Reports of the practice for painful joints have been collected across the British Isles and continental Europe and, independently, from indigenous peoples of North America's Pacific Northwest — the idea evidently occurred to more than one culture with an aching joint and a nettle bed.
Remarkably, urtication survived long enough to be tested. In the 1990s a general practice in Devon, England, collected accounts from patients who still used nettles on arthritic joints and published an exploratory study in 1999. In 2000 the same group, led by Colin Randall, reported in the Journal of the Royal Society of Medicine a randomised, double-blind crossover trial in 27 patients with osteoarthritic pain at the base of the thumb. For one week patients applied fresh nettle leaf daily to the painful area; for another week, after a five-week gap, they applied the look-alike but stingless white dead-nettle, Lamium album, as placebo. Pain and disability scores fell significantly more after the nettle week. It was a small pilot, and a treatment you can feel is hard to blind perfectly, but it has been cited ever since as a genuine, if modest, piece of evidence for one of Europe's oldest folk remedies; a follow-up pilot on chronic knee pain in 2008 was less clear-cut. How the sting might work is uncertain; the leading suggestion is counter-irritation, the principle behind mustard plasters and capsaicin creams, in which a controlled local irritation dampens a deeper pain.
Spring Soup, Famine Food and the Wartime Pot
For most of the people who have ever handled it, nettle was first of all food. Cooking, drying or crushing destroys the sting completely, and the young tops gathered in March and April, before the plant flowers and turns coarse, are a nutritious green rich in iron, calcium, protein and vitamins. Arriving weeks before any cultivated vegetable, nettles were the first fresh green of the year across the northern world, and nearly every culture in their range has a spring nettle soup. In Scotland it was nettle kail (kail meaning greens and the broth made from them), eaten in some districts on Shrove Tuesday or to mark spring. In Russia and Ukraine it is spring shchi with young nettle in place of cabbage, which for peasants and Soviet citizens alike gave the first vitamins after a winter of roots and pickles. Nordic, Baltic and Balkan kitchens have their own versions. The recipes vary, the timing does not: nettle is the taste of the end of winter.
The same plant fed people when there was nothing else. Testimony gathered from Irish families in the 1930s for the national folklore collection remembers the Great Famine of the 1840s plainly: the poor boiled nettles and ate them, pouring Indian-meal gruel over them if they had any meal and eating the nettles alone if they had not. Nettle is recorded among the wild foods that kept people alive in the Irish and Scottish famines and in sieges across Europe into the twentieth century: the plant nobody needed to plant was the one still there when the crops failed.
Britain turned to nettle again in the Second World War, though not mainly to eat: a Vegetable Drugs Committee set up at Kew in 1941 organised county herb committees whose volunteers gathered foxglove for heart medicine, rosehips for vitamin C, and nettles by the ton for chlorophyll and dye, including camouflage green.
What Is Actually in the Sting: 1947 to 2006
For most of history the sting was simply "the nettle's fire," and when chemistry arrived the first guess was formic acid, the acid ants inject — a guess that still circulates. The modern account begins in 1947, when the pharmacologists Nils Emmelin and Wilhelm Feldberg, working in Britain, published two papers in the Journal of Physiology on the fluid inside the hairs of the small nettle, Urtica urens. Testing the fluid on isolated animal tissues, they identified histamine and acetylcholine as the principal active substances and described how the brittle, silica-tipped hair snaps on contact and works as a miniature syringe. Histamine explained the immediate weal and itch (it is what mast cells release in an allergic reaction); acetylcholine, a nerve transmitter, was thought to account for much of the burning. Work in the 1950s added serotonin, and formic acid, present only in small amounts, was demoted from chief culprit to minor contributor. That four-part recipe is the one most textbooks still give.
The picture was complicated in 2006, when a Taiwanese team led by Hsin-Yi Fu analysed the hairs of a related Asian nettle, Urtica thunbergiana, in Annals of Botany. By chromatography the major constituents were histamine, oxalic acid and tartaric acid, with serotonin and formic acid present only at low levels. When they tested the components separately in rats, the two organic acids produced the long-lasting pain characteristic of a nettle sting, whereas formic acid and serotonin produced only brief discomfort, and histamine and acetylcholine on their own produced no measurable pain response at all. They concluded that the two acids, not the famous neurotransmitters, chiefly cause the persistent ache, while histamine still explains the weal and itch. Two cautions apply: the species was not the European nettle, and the authors did not rule out that the components act together. The honest current position is that a nettle sting is a cocktail whose exact recipe is still being worked out — a striking thing to say about a sensation every European has known since childhood.
From Folk Remedy to Monograph: Commission E, ESCOP and the EMA
Nettle's modern regulatory life is a German story first. Germany's Commission E, the expert panel set up in 1978 to evaluate herbal medicines, split the plant exactly as tradition had: root and herb are separate drugs with separate monographs. The root monograph, published in the Bundesanzeiger (the federal gazette) on 18 September 1986, approved nettle root for difficulty passing urine in early benign prostatic hyperplasia (BPH, the non-cancerous prostate enlargement common in older men), with the caveat that it relieves symptoms without shrinking the gland, so a doctor should be seen regularly. The herb and leaf monograph approved the above-ground parts as supportive treatment for rheumatic complaints, and for "irrigation therapy" — drinking the tea with plenty of water to flush the urinary tract — in inflammatory conditions of the lower urinary tract and to prevent kidney gravel. The indications of a late-twentieth-century regulator were, in short, those of the medieval herbals, tidied and given a rationale.
The European Scientific Cooperative on Phytotherapy (ESCOP) later issued monographs on leaf and root along the same lines, and the European Medicines Agency's herbal committee (HMPC) has assessed both. Its nettle leaf and herb monographs list traditional uses for the relief of minor joint pain, for increasing urine output to flush the urinary tract in minor urinary complaints, and externally for seborrhoeic skin. Its nettle root monograph, adopted in 2012, recognises nettle root as a traditional herbal medicinal product for the relief of lower urinary tract symptoms related to BPH, once serious conditions have been excluded by a doctor. "Traditional use" is a precise legal category: the preparation has been in medicinal use for at least thirty years and is plausible and safe; it does not mean efficacy has been proved by trial. That distinction is exactly where nettle's history and its science meet.
The clinical trials themselves are a product of the last forty years, and they follow the root–leaf split. For the root and BPH, German studies from the 1980s onward, sometimes combining nettle root with saw palmetto, reported improvements in urinary symptoms; the most cited placebo-controlled trial of nettle root alone, a six-month randomised crossover study published by Safarinejad in 2005, reported better symptom scores and urine flow on nettle than on placebo. Two comprehensive reviews in 2007 by Julia and Sigrun Chrubasik and colleagues concluded that the root shows promise for BPH symptoms but that the trials were too few, too short and too variable to be conclusive. For the leaf and joint pain, a 1997 German pilot study reported that patients with arthritis who ate stewed nettle leaf alongside a reduced dose of a standard anti-inflammatory drug fared about as well as those on the full dose — a small open study, but the first modern test of the herbals' oldest rheumatic indication — and the urtication trials described above followed. The later chapters of this evidence, including the nettle leaf trials for hay fever, are covered on the Benefits pages.
Tradition, Evidence and the Nettle Today
Set the three thousand years side by side and a pattern appears: the uses tradition recorded most consistently — a spring food, a diuretic, a remedy for aching joints and, later, the root for ageing men's urinary troubles — are the ones the regulators of the 1980s wrote into their monographs and the trials of the 1990s and 2000s went on to test, with modest results. Nettle is not a miracle; it is a plant whose traditional reputation was, on the whole, reasonable. Today it is at once a weed, a wild vegetable enjoying a revival among foragers and chefs, a tea and a supplement, a licensed traditional medicine in the European Union, a fibre crop being replanted for sustainable textiles, and the food plant of several of Europe's best-loved butterflies. The root is sold for the prostate and the leaf for hay fever, joints and nutrition, and the two are not interchangeable — a distinction Dioscorides, who used leaf, seed and root for different purposes, would have understood. The Danish mourners of 800 BCE, the Anglo-Saxon healer singing over the "stiff one," the Devon patients pressing nettles to their thumbs and the Kew botanists organising a wartime harvest were all making use of the same stubborn, useful, unloved plant. What can be more hateful than the nettle? Pliny asked, and answered his own question: very little else is so useful.
Key Research Papers
The archaeological and textile landmarks, the two chemistry papers that defined and then revised our understanding of the sting, the main modern reviews, and the first clinical trials of root and leaf. Historical primary texts (Dioscorides, Pliny, the Lacnunga) are named in the article, not cited here.
- Bergfjord C, Mannering U, Frei KM, Gleba M, Scharff AB, Skals I, Heinemeier J, Nosch M-L, Holst B (2012). Nettle as a distinct Bronze Age textile plant. Scientific Reports. — doi:10.1038/srep00664
- Viotti C, Albrecht K, Amaducci S, Bardos P, Bertheau C, et al. (2022). Nettle, a Long-Known Fiber Plant with New Perspectives. Materials. — doi:10.3390/ma15124288
- Emmelin N, Feldberg W (1947). The mechanism of the sting of the common nettle (Urtica urens). The Journal of Physiology. — PubMed PMID: 16991774
- Fu HY, Chen SJ, Chen RF, Ding WH, Kuo-Huang LL, Huang RN (2006). Identification of oxalic acid and tartaric acid as major persistent pain-inducing toxins in the stinging hairs of the nettle, Urtica thunbergiana. Annals of Botany. — PubMed PMID: 16675601
- Kregiel D, Pawlikowska E, Antolak H (2018). Urtica spp.: Ordinary Plants with Extraordinary Properties. Molecules. — doi:10.3390/molecules23071664
- Upton R (2013). Stinging nettles leaf (Urtica dioica L.): Extraordinary vegetable medicine. Journal of Herbal Medicine. — doi:10.1016/j.hermed.2012.11.001
- Chrubasik S, Enderlein W, Bauer R, Grabner W (1997). Evidence for antirheumatic effectiveness of Herba Urticae dioicae in acute arthritis: A pilot study. Phytomedicine. — PubMed PMID: 23195396
- Randall C, Randall H, Dobbs F, Hutton C, Sanders H (2000). Randomized controlled trial of nettle sting for treatment of base-of-thumb pain. Journal of the Royal Society of Medicine. — PubMed PMID: 10911825
- Chrubasik JE, Roufogalis BD, Wagner H, Chrubasik S (2007). A comprehensive review on the stinging nettle effect and efficacy profiles. Part II: Urticae radix. Phytomedicine. — PubMed PMID: 17509841
- Safarinejad MR (2005). Urtica dioica for treatment of benign prostatic hyperplasia: a prospective, randomized, double-blind, placebo-controlled, crossover study. Journal of Herbal Pharmacotherapy. — PubMed PMID: 16635963
PubMed Topic Searches
- PubMed: Stinging nettle ethnobotany and traditional use
- PubMed: Stinging nettle history of pharmacology