1. Family: Amaryllidaceae J.St.-Hil.
    1. Genus: Allium L.
      1. Allium sativum L.

        Garlic is a strongly aromatic bulb crop that has been cultivated for thousands of years. It is renowned throughout the world for its distinctive flavour as well as its health-giving properties.


    Kew Species Profiles

    General Description

    Garlic is a strongly aromatic bulb crop that has been cultivated for thousands of years. It is renowned throughout the world for its distinctive flavour as well as its health-giving properties.

    Garlic was domesticated long ago and is mentioned in ancient Egyptian, Greek, Indian, and Chinese writings. Garlic bulbs from about 1,500 BC were found in the tomb of Tutankhamen, and garlic is mentioned in the Bible and Qur’an.

    Today, garlic is grown in temperate and tropical regions all over the world, and many cultivars have been developed to suit different climates.

    Garlic, onions, leeks and chives are all members of the genus Allium, which comprises approximately 750 species. 

    Species Profile
    Geography and distribution

    Garlic is native to Central Asia (Kazakhstan, Kyrgyzstan, Turkmenistan, Tadzhikistan and Uzbekistan) and northeastern Iran.

    It is widespread in cultivation.


    Overview: A bulbous herb growing to about 60 cm tall.

    Bulb: Rounded, composed of up to about 15 smaller bulblets known as cloves. Cloves and bulbs are covered by a whitish or pinkish tunic (papery coat).

    Leaves: Four to twelve long, sword-shaped leaves attached to an underground stem.

    Flowers: Borne in a dense, spherical cluster on a spike (flower stalk) up to 25 cm long. The young flower head is enclosed in a long-beaked pair of enclosing bracts, which become papery and split to reveal the flowers.

    Individual flower stalks arise from a common point. Flowers are greenish-white or pinkish with six perianth segments (sepals and petals) about 3 mm long. Bulbils (asexual propagules), which resemble tiny cloves, are often interspersed among the flowers.

    Fruits: Flowers usually abort before developing to a stage at which fertilisation could take place.

    Seeds: Not usually produced in the wild but have been produced under laboratory conditions. With a black coat, similar to onion seeds, but approximately half the size.

    Uses Food and flavouring

    Garlic has been used as a food and flavouring agent for thousands of years. After onion, garlic is the most widely consumed bulb.

    Almost 10 million tons of garlic is produced each year. The world's largest producers include China, Korea, India, USA, Spain, Egypt and Turkey.

    Garlic bulbs are sold fresh or processed to produce a dry powder or oil. Garlic is popular in French, Spanish, Portuguese and South Asian cuisine. The bulb is the most commonly used part but chopped leaves are sometimes also used.

    Garlic is one of the most frequently used plants in many parts of India, Pakistan and Bangladesh, and there are many ways of using it. Garlic is used not only to flavour curries but can be used in drinks and savoury desserts.

    To add a mild flavour to food the fresh cloves are cooked whole. If a stronger flavour is required, garlic cloves are crushed or ground and added to the dish. Garlic should not be cooked for too long as it can become bitter. Often garlic heads with small cloves have a stronger flavour than larger ones.

    Oil is processed from garlic and used commercially as flavouring. It can be added to flavour otherwise bland vegetable oils.

    Garlic is not popular with everyone. Members of certain religious groups in India, such as Jainism and Brahman Hinduism, are forbidden to eat onion-related plants like garlic. The reasons differ in each case. Jains consider use of garlic to be too damaging to the plant, while some Hindus consider garlic too stimulating.

    Traditional medicine

    Garlic is one of the oldest plants to be widely used as a medicine. In most corners of the world, it is regarded as an aphrodisiac. Its medical qualities have been recognised since ancient times and feature widely in traditional remedies.

    The bulbs are the most frequently used part of the plant. In India they are prepared in several ways including extracting the juice or pulping the bulb to a paste. This has been taken to relieve problems such as coughs and fevers or applied externally to prevent greying of hair and to improve skin conditions such as eczema and scabies. It has even been applied to the noses of hysterical girls to calm them down!

    Warmed garlic juice or a mixture made with oil and boiled bulbs have been dropped into the ear to relieve earache and deafness. In Ayurvedic and Siddha medicine, garlic juice has been used to alleviate sinus problems. In Unani medicine, an extract is prepared from the dried bulb that is inhaled to promote abortion or taken to regulate menstruation. Unani physicians also use garlic to treat paralysis, forgetfulness, tremor, colic pains, internal ulcers and fevers.

    Extracts of bulbs have been widely used in folk medicine. Whooping cough in children has been treated by administering a drink made with a hot water extract of the dried bulb mixed with honey or by wearing a necklace of bulbs. Hot water extracts are also taken to kill intestinal worms. In Pakistan, an extract is traditionally taken orally to settle the stomach, treat coughs and reduce fever.

    Garlic bulbs have sometimes been combined with other plants to make medicines. Mixed with the leaves of the ivy gourd ( Coccinia grandis ) it is used as a treatment for rabies. An infusion of the entire plant has been combined with sugar and taken to treat fevers. Garlic has also been used in traditional Indian veterinary medicine to treat tetanus and inflammatory disorders of the lungs.

    Garlic also features in traditional medicine in other parts of the world. In Nepal, East Asia and the Middle East it has been used to treat all manner of illnesses including fevers, diabetes, rheumatism, intestinal worms, colic, flatulence, dysentery, liver disorders, tuberculosis, facial paralysis, high blood pressure and bronchitis.

    Western medicine

    The medicinal properties of garlic are now scientifically recognised. It is widely available in different forms as over-the-counter supplements, particularly to treat blood conditions and as an anti-viral medicine.

    Various sulphur-containing compounds occur in garlic. One such compound is called alliin. Crushing or chopping garlic may also promote enzyme reactions and allow other compounds to form. Studies show that these compounds may be effective in many ways including: pain relief; anti-worm, anti-bacterial, anti-fungal, anti-viral, antioxidant, and anti-cancer properties; lowering of blood glucose and blood pressure; and liver protection.

    Other research shows that garlic may help lower cholesterol, prevent blood clots and spasms, act as an expectorant and alleviate swellings, sores and acne.

    Pest control

    Garlic is sometimes deployed in gardens to deter pests. Some companies have taken its pest-repelling properties a step further by isolating its active compounds and marketing them in a spray-on formula.

    Garlic is often grown among flowers or root vegetables as a companion plant, with the aim of protecting other plants from pests. In some small garden plots, rows of garlic are planted along the perimeter to act as a deterrent.

    Garlic extracts have also been used as deterrents. In Europe these extracts are freeze-dried and marketed as garlic pellets, which are then dissolved in water and sprayed onto plants to deter aphids and caterpillars. A disadvantage of these extracts is that the active sulphurous compounds have a pungent smell that can mask the perfume of roses and other aromatic plants.

    This species at Kew

    Dried specimens of Allium sativum are held in Kew’s Herbarium where they are available to researchers by appointment. Details, including images, of other Allium species can be seen online in Kew’s Herbarium Catalogue.

    View details and images of Allium species

    Bulbs, seeds, leaves and roots of Allium sativum are held in Kew’s Economic Botany Collection in the Sir Joseph Banks Building, where they are available to researchers by appointment.

    Rocky valleys, riverbeds, streambeds and gullies.
    Not considered to be threatened.

    Adverse effects including a burning sensation in the mouth and intestine, sickness, and odour from the breath and the body. Skin reactions have also been reported. Garlic may interfere with some prescribed medicines.

    Food Additives
    It is used mainly as a strong flavouring. Roots (incl. Rhizomes etc) - An Introduction to the Botany of Tropical Crops: Second edition
    Digestive System Disorders
    treat diarrhea Unspecified parts - Antisecretory activity of plants used to treat gastrointestinal disorders in Mexico
    Food and drink, medicine, pest control.



    Found In:

    Iran, Kazakhstan, Kirgizstan, Tadzhikistan, Turkmenistan, Uzbekistan

    Introduced Into:

    Albania, Algeria, Amur, Austria, Baleares, Baltic States, Bangladesh, Belarus, Cambodia, Canary Is., Central European Rus, China North-Central, China South-Central, China Southeast, Corse, Cuba, Czechoslovakia, Dominican Republic, East European Russia, Egypt, Ethiopia, France, Galápagos, Germany, Greece, Haiti, Hungary, Illinois, India, Iraq, Italy, Jamaica, Korea, Leeward Is., Libya, Mexico Central, Mexico Northwest, Mexico Southeast, Mexico Southwest, Morocco, North European Russi, Northwest European R, Pakistan, Poland, Primorye, Puerto Rico, Romania, Sardegna, Seychelles, Sicilia, South European Russi, Spain, Switzerland, Tennessee, Thailand, Trinidad-Tobago, Tunisia, Turkey, Ukraine, Yugoslavia

    Common Names


    Allium sativum L. appears in other Kew resources:

    First published in Sp. Pl.: 296 (1753)

    Accepted in:

    • [1] (2016) Phytotaxa 250: 1-431
    • [2] Bailey, C. & al. (2015) Guide to the Vascular Plants of Tennessee . University of Tennessee press
    • [3] Chang, C.S., Kim, H. & Chang, K.S. (2014) Provisional checklist of vascular plants for the Korea peninsula flora (KPF) . DESIGNPOST
    • [4] Mohlenbrock, R.H. (2014) Vascular Flora of Illinois. A Field Guide , ed. 4: 1-536. Southern Illinois University Press, Carbondale
    • [5] Mostaph, M.K. & Uddin, S.B. (2013) Dictionary of plant names of Bangladesh , Vasc. Pl.: 1-434. Janokalyan Prokashani, Chittagong, Bangladesh
    • [6] (2012) Smithsonian Contributions to Botany 98: 1-1192
    • [7] (2010) Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève
    • [11] Nelson Sutherland, C.H. (2008) Catálogo de las plantes vasculares de Honduras. Espermatofitas . SERNA/Guaymuras, Tegucigalpa, Honduras
    • [12] (2006) Fascicles of Flora of India 23: 1-134. Botanical Survey of India, New Delhi
    • [14] Boulos, L. (2005) Flora of Egypt 4: 1-617. Al Hadara Publishing, Cairo
    • [17] Flora of North America Editorial Committee (2002) Flora of North America North of Mexico 26: 1-723. Oxford University Press, New York, Oxford
    • [18] (2000) Flora of China 24: 1-431. Missouri Botanical Garden Press, St. Louis
    • [22] Jørgensen, P.M. & León-Yánes, S. (eds.) (1999) Catalogue of the Vascular Plants of Ecuador . Missouri Botanical Garden Press, St. Louis
    • [23] (1997) Flora of Ethiopia and Eritrea 6: 1-586. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps
    • [24] Lee, W.T. (1996) Lineamenta Florae Koreae . Soul T'ukpyolsi: Ak'ademi Sojok
    • [26] Govaerts, R. (1995) World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne
    • [27] (1993) Las Monocotiledóneas Mexicanas una Sinopsis Florística 1(1): 1-76. Consejo Nacional de la Flora de México, México D.F.
    • [28] Robertson, S.A. (1989) Flowering Plants of Seychelles . Royal Botanic Gardens, Kew
    • [29] (1985) Flora of Iraq 8: 1-440. Ministry of Agriculture & Agrarian Reform, Baghdad
    • [30] Davis, P.H. (ed.) (1984) Flora of Turkey and the East Aegean Islands 8: 1-632. Edinburgh University Press, Edinburgh
    • [31] (1978) Flora of Thailand 1: 1-694. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok
    • [33] (1975) Flora of Pakistan 83: 1-31. Department of Botany, University of Karachi, Karachi
    • [34] (1967) Flora Kirgizskoi SSR dopolnenie 1: 1-149. Frunze : Izd-vo KirgizFAN SSSR
    • [35] (1963) Flora Tadzhikskoi SSR 2: 1-454. Izd-vo Akademii nauk SSSR, Moskva
    • [36] Maire, R. (1958) Flore de l'Afrique du Nord 5: 1-307. Paul Lechevalier, Paris
    • [37] Pavlov, N.V. (ed.) (1958) Flora Kazakhstana 2: 1-290. Alma-Ata, Izd-vo Akademii nauk Kazakhskoi SSR
    • [38] (1941) Flora Uzbekistana 1: 1-566. Izd-va Akademii nauk Uzbekskoi SSR, Tashkent


    • [8] Vaughan, J. G. & Geissler, C. A. (2009). The New Oxford Book of Food Plants. 2nd Edition. Oxford University Press, Oxford, UK.
    • [9] Mabberley, D. J. (2008). Mabberley’s Plant-book: a Portable Dictionary of Plants, their Classification and Uses. 3rd Edition. Cambridge University Press, Cambridge, UK.
    • [10] Meredith, T. J. (2008). The Complete Book of Garlic: a Guide for Gardeners, Growers, and Serious Cooks. Timber Press Inc., Portland, Oregon.
    • [13] Antisecretory activity of plants used to treat gastrointestinal disorders in Mexico
    • [15] Brullo, S. (2005) Personal Communication on Alliaceae 2 . Università di Catania
    • [16] Royal Botanic Gardens Kew (2005). Plant Cultures – garlic.
    • [19] Dy Phon, P. (2000) Dictionnaire des plantes utilisées au Cambodge . Chez l'auteur, Phnom Penh, Cambodia
    • [20] Kiple, K. F. & Ornelas, K. C. (eds) (2000). The Cambridge World History of Food, Volume 1. Cambridge University Press.
    • [21] Huxley, A., Griffiths, M. & Levy, M. (eds) (1999). The New Royal Horticultural Society Dictionary of Gardening. Volume 1 (A to C). Macmillan Reference, London.
    • [25] Mathew, B. (1996). A Review of Allium sectio n Allium. Royal Botanic Gardens, Kew.
    • [32] An Introduction to the Botany of Tropical Crops: Second edition


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