Flax
Flax | |
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Botanical illustration from 1887 | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Malpighiales |
Family: | Linaceae |
Genus: | Linum |
Species: | L. usitatissimum
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Binomial name | |
Linum usitatissimum L. | |
Varieties[1] | |
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Synonyms[2] | |
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Flax, also known as common flax or linseed, is a flowering plant, Linum usitatissimum, in the family Linaceae. It is cultivated as a food and fiber crop in regions of the world with temperate climates. In 2022, France produced 75% of the world's supply of flax.
Textiles made from flax are known in English as linen and are traditionally used for bed sheets, underclothes, and table linen. Its oil is known as linseed oil. In addition to referring to the plant, the word "flax" may refer to the unspun fibers of the flax plant.
The plant species is known only as a cultivated plant[3] and appears to have been domesticated just once from the wild species Linum bienne, called pale flax.[4] The plants called "flax" in New Zealand are, by contrast, members of the genus Phormium.
Description
Several other species in the genus Linum are similar in appearance to L. usitatissimum, cultivated flax, including some that have similar blue flowers, and others with white, yellow, or red flowers.[5] Some of these are perennial plants, unlike L. usitatissimum, which is an annual plant.
Cultivated flax plants grow to 1.2 m (4 ft) tall, with slender stems. The
The flowers are 15–25 mm in diameter with five petals, which can be coloured white, blue, yellow, and red depending on the species.[6] The fruit is a round, dry capsule 5–9 mm in diameter, containing several glossy brown seeds shaped like apple pips, 4–7 mm long.
Taxonomy
The scientific name for flax was coined by Carl Linnaeus in his book Species Plantarum in 1753.[1]
Varieties
According to Plants of the World Online the flax species has two botanical varieties, Linum usitatissimum var. usitatissimum and Linum usitatissimum var. stenophyllum.[1]
Cultivation
Flax is native to the region extending from the eastern
History

The earliest evidence of humans using wild flax as a textile comes from the present-day Republic of Georgia, where spun, dyed, and knotted wild flax fibers found in Dzudzuana Cave date to the Upper Paleolithic, 30,000 years ago.[9][10][11] Humans first domesticated flax in the Fertile Crescent region.[12] Evidence exists of a domesticated oilseed flax with increased seed-size from Tell Ramad in Syria[12] and flax fabric fragments from Çatalhöyük in Turkey[13] by c. 9,000 years ago. Use of the crop steadily spread, reaching as far as Switzerland and Germany by 5,000 years ago.[14] In China and India, domesticated flax was cultivated at least 5,000 years ago.[15]
Flax was cultivated extensively in
Diseases
Production
Flax production – 2022 | |
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Country | tonnes |
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652,680 |
![]() |
77,910 |
![]() |
47,626 |
![]() |
29,035 |
![]() |
24,103 |
World | 875,995 |
Source: FAOSTAT of the United Nations[21]
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In 2022, world production of raw or retted flax was 875,995 tonnes, led by France with 75% of the total.[21] One of the largest regions in France for flax production is Normandy with nearly one-third of the world's production.[22]
Harvesting
This section needs additional citations for verification. (June 2021) |
Maturation
Flax is harvested for fiber production after about 100 days, or a month after the plants flower, and two weeks after the seed capsules form. The bases of the plants begin to turn yellow. If the plants are still green, the seed will not be useful, and the fiber will be underdeveloped. The fiber degrades once the plants turn brown.
Flax grown for seed is allowed to mature until the seed capsules are yellow and just starting to split; it is then harvested in various ways. A combine harvester may either cut only the heads of the plants, or the whole plant. These are then dried to extract the seed. The amount of weeds in the straw affects its marketability, and this, coupled with market prices, determines whether the farmer chooses to harvest the flax straw. If the flax straw is not harvested, typically, it is burned, since the stalks are quite tough and decompose slowly (i.e., not in a single season). Formed into windrows from the harvesting process, the straw often clogs up tillage and planting equipment. Flax straw of insufficient quality for fiber use can be baled to build shelters for farm animals, sold as biofuel, or removed from the field in the spring.[23]
Two ways are used to harvest flax fiber, one involving mechanized equipment (combines), and the second method, is more manual and targets maximum fiber length.
Harvesting for fiber
Mechanical
Flax for fiber production is usually harvested by a specialized flax harvester. Usually built on the same machine base as a combine, but instead of the cutting head, it has a flax puller. The flax plant is turned over and is gripped by rubber belts roughly 20–25 cm (8–10 inches) above ground, to avoid getting grasses and weeds in the flax. The rubber belts then pull the whole plant out of the ground with the roots so the whole length of the plant fiber can be used. The plants then pass over the machine and are placed on the field crosswise to the harvester's direction of travel. The plants are left in the field for field retting.
The mature plant can also be cut with mowing equipment, similar to hay harvesting, and raked into windrows. When dried sufficiently, a combine then harvests the seeds similar to wheat or oat harvesting.
Manual
The plant is pulled up with the roots (not cut), so as to increase the fiber length. After this, the flax is allowed to dry, the seeds are removed, and it is then retted. Depending upon climatic conditions, characteristics of the sown flax, and fields, the flax remains on the ground between two weeks and two months for retting. As a result of alternating rain and the sun, an enzymatic action degrades the pectins that bind fibers to the straw. The farmers turn over the straw during retting to evenly rett the stalks. When the straw is retted and sufficiently dry, it is rolled up. It is then stored by farmers before extracting the fibers.

Processing

Threshing is the process of removing the seeds from the rest of the plant. Separating the usable flax fibers from other components requires pulling the stems through a hackle and/or beating the plants to break them.
Flax processing is divided into two parts: the first part is generally done by the farmer, to bring the flax fiber into a fit state for general or common purposes. This can be performed by three machines: one for threshing out the seed, one for breaking and separating the straw (stem) from the fiber, and one for further separating the broken straw and matter from the fiber.
The second part of the process brings the flax into a state for the very finest purposes, such as lace, cambric, damask, and very fine linen. This second part is performed by a refining machine.
Uses



Flax is grown for its seeds, which can be ground into a meal or turned into
Flax fibers taken from the stem of the plant are two to three times as strong as cotton fibers. Additionally, flax fibers are naturally smooth and straight. Europe and North America both depended on flax for plant-based cloth until the 19th century, when cotton overtook flax as the most common plant for making
Linseed meal, the by-product of producing linseed oil from flax seeds, is used as livestock fodder.[25]
Flax seeds
Flax seeds occur in brown and yellow (golden) varieties.
Although brown flax seed varieties may be consumed as readily as the yellow ones, and have been for thousands of years, these varieties are more commonly used in paints, fiber, and cattle feed.
Culinary
A 100-gram portion of ground flax seed supplies about 2,234 kilojoules (534 kilocalories) of
Three
Nutrition
Nutritional value per 100 g (3.5 oz) | |||||||||||||||||||||||||||||||||
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Energy | 2,234 kJ (534 kcal) | ||||||||||||||||||||||||||||||||
28.88 g | |||||||||||||||||||||||||||||||||
Sugars | 1.55 g | ||||||||||||||||||||||||||||||||
Dietary fiber | 27.3 g | ||||||||||||||||||||||||||||||||
42.16 g | |||||||||||||||||||||||||||||||||
Saturated | 3.663 g | ||||||||||||||||||||||||||||||||
Monounsaturated | 7.527 g | ||||||||||||||||||||||||||||||||
Polyunsaturated | 28.730 g 22.8 g 5.9 g | ||||||||||||||||||||||||||||||||
18.29 g | |||||||||||||||||||||||||||||||||
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Other constituents | Quantity | ||||||||||||||||||||||||||||||||
Water | 7 g | ||||||||||||||||||||||||||||||||
†Percentages estimated using US recommendations for adults,[35] except for potassium, which is estimated based on expert recommendation from the National Academies.[36] |
Flax seeds are 7% water, 18%
(DVs above 90%) (table).As a percentage of total
Health research
A
Linseed oil
Safety
Flax seed and its oil are generally recognized as safe for human consumption.[44] Like many common foods, flax contains small amounts of cyanogenic glycoside,[45] which is nontoxic when consumed in typical amounts.[46] Typical concentrations (for example, 0.48% in a sample of defatted dehusked flax seed meal) can be removed by special processing.[47]
Fodder
After crushing the seeds to extract linseed oil, the resultant linseed meal is a
Linseed meal is added to
Raw, immature linseeds contain an amount of
Flax straw left over from the harvesting of oilseed is not very nutritious; it is tough and indigestible and is not recommended for use as ruminant fodder, although it may be used as bedding or baled as windbreaks.[51]
Warfare
A British biowarfare military operation plan developed from 1942 to 1944 during World War II was planned to disseminate linseed with anthrax spores to be eaten by livestock, and eventually consumed by the human population.[52] This would have led to widespread death, but the plan was eventually abandoned for Operation Overlord.
Flax fibers
Flax fiber is extracted from the
The use of flax fibers dates back tens of millennia;[9] linen, a refined textile made from flax fibers, was worn widely by Sumerian priests more than 4,000 years ago.[53] Industrial-scale flax fiber processing existed in antiquity. A Bronze Age factory dedicated to flax processing was discovered in Euonymeia, Greece.[54]
The best grades are used for fabrics such as
Flax mills for spinning flaxen yarn were invented by John Kendrew and Thomas Porthouse of Darlington, England, in 1787.[56] New methods of processing flax have led to renewed interest in the use of flax as an industrial fiber.
Preparation for spinning
Before the flax fibers can be spun into linen, they must be separated from the rest of the stalk. The first step in this process is retting, which is the process of rotting away the inner stalk, leaving the outer parts intact. At this point, straw, or coarse outer stem (cortex and epidermis), is still remaining. To remove this, the flax is "broken", the straw is broken up into small, short bits, while the actual fiber is left unharmed. Scutching scrapes the outer straw from the fiber. The stems are then pulled through "hackles", which act like combs to remove the straw and some shorter fibers out of the long fiber.[citation needed]
Retting flax
Several methods are used for retting flax. It can be retted in a pond, stream, field, or tank. When the retting is complete, the bundles of flax feel soft and slimy, and quite a few fibers stand out from the stalks. When wrapped around a finger, the inner woody part springs away from the fibers. Pond retting is the fastest. It consists of placing the flax in a pool of water which will not evaporate. It generally takes place in a shallow pool which will warm up dramatically in the sun; the process may take from a few days to a few weeks. Pond-retted flax is traditionally considered of lower quality, possibly because the product can become dirty, and is easily over-retted, damaging the fiber. This form of retting also produces quite an odor. Stream retting is similar to pool retting, but the flax is submerged in bundles in a stream or river. This generally takes two or three weeks longer than pond retting, but the end product is less likely to be dirty, does not smell as bad, and because the water is cooler, is less likely to be over-retted. Both pond and stream retting were traditionally used less because they pollute the waters used for the process.[citation needed]
In field retting, the flax is laid out in a large field, and dew is allowed to collect on it. This process normally takes a month or more but is generally considered to provide the highest quality flax fibers, and it produces the least pollution.[57]
Retting can also be done in a plastic trash can or any type of water-tight container of wood, concrete, earthenware, or plastic. Metal containers will not work, as acid is produced when retting, and it would
Dressing the flax
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Breaking flax
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Scutching flax
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Heckling flax
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Flax fiber in different forms, before and after processing
Dressing the flax is the process of removing the straw from the fibers. Dressing consists of three steps: breaking, scutching, and heckling. The breaking breaks up the straw. Some of the straw is scraped from the fibers in the scutching process, and finally, the fiber is pulled through heckles to remove the last bits of straw.
Breaking breaks up the straw into short segments.
Scutching removes some of the straw from the fiber.
Genetically modified flax contamination

In September 2009, Canadian flax exports reportedly had been contaminated by a deregistered
In culture

Flax is an emblem of
Common flax is the national flower of Belarus.
In early versions of the Sleeping Beauty tale, such as "Sun, Moon, and Talia" by Giambattista Basile, the princess pricks her finger, not on a spindle, but on a sliver of flax, which later is sucked out by her children conceived as she sleeps.
See also
- Flax in New Zealand – Flax fibre (Phormium) in New Zealand
- International Year of Natural Fibres – United Nations observance of 2009
- Irish linen – Brand name for linen woven in Ireland
- Belgian Linen – Trademark
- Nutrition – Provision to cells and organisms to support life
- Salvia hispanica – Species of flowering plant in the mint and sage family Lamiaceae
- Thomas Ferguson & Co Ltd – Irish linen Jacquard weaver in Ireland
- Shatnez – Type of cloth
- Hemp seed– Low-THC cannabis plant
References
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- ^ a b "These Vintage Threads Are 30,000 Years Old". NPR.org. NPR. Archived from the original on 4 December 2010. Retrieved 13 November 2010.
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- ^ Çatalhöyük 2013 Archive Report (Report).
- ^ Barber E. (1991) "Prehistoric Textiles: The Development of Cloth in the Neolithic and Bronze Ages with Special Reference to the Aegean". Princeton University Press, p.12
- ^ ISBN 978-3-540-34387-5.
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- ^ (2003) "The Oxford Encyclopedia of Economic History, Volume 1" Oxford University Press, p.303.
- ^ a b "Flax (raw or retted) production in 2022; Crops/Regions/World List/Production Quantity (from pick lists)". UN Food and Agriculture Organization, Statistics Division (FAOSTAT). 2024. Retrieved 7 June 2024.
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- ^ FAO. Archived from the originalon 12 July 2017. Retrieved 27 March 2023.
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- ^ a b Jasper Womach, et al., eds. (2005), Agriculture: A Glossary of Terms, Programs, and Laws, 2005 Edition (PDF), Library of Congress: Congressional Research Service, archived from the original on 10 August 2011
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- ^ a b "Full Report (All Nutrients): 12220, Seeds, flaxseed per 100 g". USDA National Nutrient Database version SR-27. 2015. Archived from the original on 20 September 2014.
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- ^ Burke M (22 April 2024). "Britain's mysterious WW2 'island of death'". BBC Culture. Retrieved 17 February 2025.
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{{cite book}}
: ISBN / Date incompatibility (help - ISBN 978-9606878947.
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- ^ Akin Dodd F (2008). "Pectinolytic enzymes and retting". BioResources. 3 (1): 155–169.
- .
- ^ a b "Flax growers try to flush Triffid from system". The Western Producer. 11 January 2013. Archived from the original on 17 February 2016. Retrieved 11 January 2016.
- ^ a b "Sampling and Testing Protocol for Canadian Flaxseed Exported to the European Union" (PDF). Canadian Grain Commission. 28 April 2014. Archived (PDF) from the original on 14 October 2015. Retrieved 11 January 2016.
- ^ "Canada moves to revive flax exports after GMO flap". Reuters. 8 January 2010. Archived from the original on 9 May 2013. Retrieved 11 November 2012.
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External links
The dictionary definition of flaxen at Wiktionary