Plant

Linen

A field of flax, woven into summer.

Reviewed 2026-09-22. Evidence level: verified. Open the interactive profile and route map.

Key figures

Elementary fiber diameter: about 15 to 18 microns on average
Elementary fiber cross-section: polygonal, roughly pentagonal to octagonal
Dew retting duration: about 3 to 6 weeks in the field
Bundle binding substances: pectin and hemicellulose

Approximate values under the stated conditions.

Overview

Production: about 190,000 tonnes of scutched long fiber (about 116,000 tonnes in 2024) (European scutched long flax fiber only, not a world total; short fiber and tow excluded, 2025). Main producers: France, Belgium, Netherlands. [7]

Bast fiber extracted from flax stems. Linen is the textile fiber name; flax is the plant.

Feel and behavior

Crisp, absorbent and characteristically creased; softens with use.

Where you find it

Shirting, summer tailoring, table linen and bedding.

Source and geography

Linen is made from the bast fiber of fiber flax, Linum usitatissimum. The fiber lies in bundles in the outer stem, between the bark and the woody core that becomes the waste material called shive, and technical fiber strands can run almost the full length of the stem. For that reason fiber flax is pulled from the ground rather than cut, preserving length for long-line yarn. Fiber flax is grown in cool, moist temperate climates, and northwestern Europe has a long-established growing and scutching industry.

Advantages

It is strong and stiff, so well-made household linen can last for decades.
It absorbs and releases moisture quickly and feels cool in hot, humid weather.
It tolerates hot washing and a hot iron, which suits table and bed linen.
It becomes softer and more supple with repeated washing.

Drawbacks

It creases readily and holds wrinkles, which not everyone finds acceptable.
Repeated folding along the same line can wear or crack fibers at the crease.
Untreated linen can shrink in the first washes unless it has been prewashed.
Fine, long-line linen from well-documented sources costs considerably more than cotton.

Worth knowing

The Alliance reported 38 Masters of LINEN certified companies in eight European countries in December 2025, including 8 spinners, 27 weavers and 3 knitters.
The European Flax mark was renamed Masters of FLAX FIBRE from January 2025.
Linen yarn has its own count system, the lea, based on how many 300-yard hanks weigh one pound.

Types, grades and fabrics

Types and grades

Linen is graded first by fiber length. Long line fiber, hackled from the full stem, is wet spun into fine, smooth, lustrous yarn; the shorter tow is dry spun into thicker, slubbier yarn for rustic cloth, towels and heavy canvas. Color depends on retting and finishing: dew-retted flax gives the gray-beige called natural or flax color, which can be half-bleached, fully bleached or dyed. Yarn fineness is expressed in lea (the number of 300-yard hanks per pound) or metric count. For origin, the Alliance for European Flax-Linen and Hemp runs two marks: Masters of FLAX FIBRE (called European Flax until 2025) covers European flax grown without irrigation and scutched in Europe, while Masters of LINEN also requires spinning and weaving in Europe.

Fabrics and products

Handkerchief linen is a fine, sheer plain weave for shirts, blouses and pocket squares. Mid-weight plain weaves serve shirting, dresses, trousers and bedding; heavier butcher's linen and linen canvas are used for aprons, upholstery and artists' supports. Damask is a jacquard weave with a reversible pattern, traditional for table linen, and huckaback has a pebbled texture for absorbent towels. Half-linen or linen union combines a cotton warp with a linen weft for a softer, cheaper cloth. Linen is also blended with cotton, viscose or silk for drape and fewer wrinkles, and linen jersey knits are made for tops.

Buying and care

How to judge quality

Good linen feels cool, dense and even, with occasional natural slubs rather than frequent thick-and-thin spots and loose fibers, which suggest short tow yarn. Hold it to light: gaps between yarns mean a loose weave that will distort. As a rough guide, about 100 to 150 GSM suits shirts, 150 to 200 GSM suits bedding and dresses, and heavier cloth suits trousers and upholstery. Stonewashed or enzyme-washed linen has been tumbled to soften and preshrink it, which gives a relaxed, rumpled look but some loss of strength. Read the content line: slub cotton, viscose and polyester are sold as 'linen look', and a 'linen blend' can be mostly another fiber. Masters of LINEN marks indicate European processing from field to fabric.

Care in detail

Wash linen at 30 to 40 C on a gentle cycle with mild detergent, in an uncrowded drum, and reserve hotter washes for white household linen if the label allows. Avoid chlorine bleach on colors and optical brighteners on natural-colored linen. Line dry or tumble on low and remove while still damp to limit creasing. Linen irons best hot and damp: use the high setting, up to about 200 C (three dots on ISO 3758 care labels), with plenty of steam or a spray of water, ironing dark linen on the reverse to prevent shine. Store clean and fully dry, rolling tablecloths or varying fold lines so fibers do not break along permanent creases.

Care at a glance

Follow the label, allow space in the wash and reshape while damp. Creasing is part of its character.

Environmental and social footprint

Fiber flax in northwestern Europe is largely rainfed, and the Masters of FLAX FIBRE mark requires flax grown without irrigation and with limited chemical inputs, according to the Alliance for European Flax-Linen and Hemp. Dew retting in the field uses no process water but depends on weather, whereas historical pond and river retting polluted waterways. Much of the footprint arises later: wet spinning uses hot water and energy, and bleaching and finishing add chemicals and effluent, often in mills far from the field. Spinning and weaving can take place far from the field, so an origin claim may cover only the fiber, not the yarn or fabric. Independent, dated life cycle data specific to linen apparel are scarce, and producer comparisons with cotton should be read as claims.

Tradeoffs

Cultivation conditions and retting methods vary. Dyeing, finishing and fabric construction also shape the final footprint.

A useful question to ask: Where was the flax grown, and where were spinning, weaving and finishing performed?

Science

Data sheet

Property	Value	Conditions	Source
Density	about 1.50 g/cm3	flax fiber, compiled literature value	[1]
Elongation at break	1 to 4 %	flax fiber, compiled literature range	[1]
Thermal decomposition	about 220 to 350 C	thermogravimetry; onset of hemicellulose and amorphous cellulose breakdown about 220 to 250 C, main cellulose mass loss about 300 to 350 C (review value shared by cotton, flax, jute, hemp and sisal)	[1]
Elementary fiber diameter	about 14 to 16 microns	flax cultivar Agatha, compiled literature value	[1]
Elementary fiber length	17 to 25 mm	single flax cells; spun as longer technical bundles	[2]
Tensile strength	345 to 2000 MPa	single fiber, compiled literature range	[1]

Cellulose-rich plant material

Seed, stem, leaf or other plant structure. Extraction and preparation vary.

Structure and chemistry

Flax fiber is hierarchical. The individual plant cells, called elementary or ultimate fibers, are polygonal in cross-section, roughly pentagonal to octagonal, and average about 15 to 18 micrometers in diameter. Each has a thin primary wall, a thick cellulose-rich secondary wall dominated by the S2 layer, and a narrow central lumen. Elementary fibers overlap along their length and are cemented by pectin and hemicellulose into technical fiber bundles. Transverse dislocations visible under polarized light, called nodes or kink bands, are local compressive defects along the fiber; they help identification and can act as starting points for tensile failure. Cellulose microfibrils lie close to the fiber axis, which contributes to high stiffness and low extension.

From source to yarn

After pulling, the stems are retted so that microbial enzymes break down the pectins binding fiber to stem. Dew or field retting, the most common method today, leaves the flax in swaths for about three to six weeks, where rain, dew and soil microorganisms act on it; it usually gives grayer fiber. Water retting and enzyme retting give whiter fiber, and over-retting degrades the cellulose. Dried straw is broken and scutched to knock out shive, then hackled (combed) to split and parallelize the long line fiber and separate the short tow. Fine line yarns are traditionally wet spun through hot water, which softens the residual gums so the bundles can be drafted finely; tow is usually dry spun.

Performance in use

Because its cellulose is highly ordered and oriented, flax is strong and stiff with little stretch. That gives linen its crisp hand but also poor wrinkle recovery, and repeated sharp folding along the same line can break fibers at the crease, especially at weak points such as kink bands. Linen absorbs moisture readily and releases it quickly, which contributes to its cool feel, and it tolerates high ironing temperatures. It takes the same dye classes as cotton, such as reactive and vat dyes, though its compact structure can make penetration less even. Like other cellulosic fibers it chars rather than melts and is vulnerable to mildew in damp storage.

How it is identified

Burn tests are indicative only and need fire precautions; linen burns like cotton, with a paper-like smell and soft gray ash. The microscope is more informative: flax shows straight, bamboo-like fibers with cross markings at nodes and kink bands, a polygonal cross-section and a narrow lumen, and no ribbon convolutions like cotton. Separating flax from hemp is harder and may require several methods together, such as a drying-twist test, lignin staining and spectroscopy. Slub-yarn cotton, viscose and polyester fabrics are often sold as having a linen look.

History

Timeline

c. 32,000 to 26,000 BPSpun, dyed and knotted wild flax fibers were recovered from Upper Paleolithic layers at Dzudzuana Cave in Georgia, radiocarbon dated as early as about 32,000 to 26,000 years before present. [3]
c. 1850Hand hackling pins held by the Irish Linen Centre and Lisburn Museum, dated about 1850, record the combing of scutched flax into line fiber and tow. [4]
2025From January 2025 the European Flax certification was renamed Masters of FLAX FIBRE, covering flax grown and scutched in Europe without irrigation. [5]
2025The Alliance for European Flax-Linen and Hemp reported 38 Masters of LINEN certified companies in eight European countries in December 2025. [6]
2025European scutching mills produced a record of about 190,000 tonnes of long flax fiber, up from about 116,000 tonnes in 2024, according to the Alliance. [7]

Flax is among the long-established plant sources of cloth. Linen moved through household, commercial and mechanized production, with a strong European growing and processing tradition. Today it appears in both woven and knitted fabrics.

The deeper record

Flax has been cultivated for fiber since antiquity, and for most of its history the labor of pulling, retting, breaking, scutching, hackling and spinning was done by hand, largely within households and local workshops. Retting practice shaped both fiber color and landscape: water retting in ponds and rivers produced pale fiber but polluted water, while dew retting on the field became the dominant method in modern production. Mechanized hackling and wet spinning allowed fine line yarns to be produced industrially in the nineteenth century. Current research treats the flax bundle as a natural composite, studying kink bands and elementary fiber properties for use in fiber-reinforced plastics.

Labeling and law

In the United States, linen is disclosed by its fiber name and percentage by weight under the Textile Fiber Products Identification Act (15 U.S.C. 70 et seq.) and 16 CFR Part 303; linen-look fabrics must be named by their actual fibers. In the EU, Regulation (EU) No 1007/2011 governs textile fiber names. Private origin marks exist for European-grown flax and linen, and they differ in whether they cover only cultivation and scutching or also spinning, weaving and finishing, so the certificate scope matters. Organic flax can be certified through standards such as GOTS or OCS.

This describes what rules and standards cover. It is not legal advice; jurisdiction, product form and current rule text control.

Frequently asked

How do you iron linen properly?

Iron it hot and damp. Linen tolerates the highest iron setting, about 200 C, and presses best while still slightly moist from the wash or sprayed with water. Use steam, iron dark colors on the reverse to avoid shiny patches, and hang or fold the piece while it is warm.

Does linen shrink?

It can, mostly in the first few washes, especially if it was not prewashed or stonewashed. Washing at 30 to 40 C and avoiding a hot dryer limits shrinkage. Pre-softened, stonewashed linen has usually already shrunk, so it changes less at home.

What does stonewashed linen mean?

The fabric or finished item was tumbled with pumice or treated in an enzyme wash to break up the stiff new-linen hand. The result is softer, preshrunk and deliberately rumpled, but the abrasion costs some strength, so very heavily washed linen may wear faster.

What do Masters of LINEN and Masters of FLAX FIBRE certify?

Masters of FLAX FIBRE, formerly European Flax, covers flax grown in Europe without irrigation and scutched in Europe. Masters of LINEN adds spinning and weaving in Europe. Neither is an organic certification, and the scope matters: a product with only the fiber mark may have been spun and woven outside Europe.

Sources

Cite this page

Chaos. (2026). Linen. In Fibers of Earth: An independent textile atlas. https://www.hendrickresearch.com/fibers/materials/linen/