European linen and certifications

Europe is the world's largest producer of flax fibre. According to the Alliance for European Flax-Linen & Hemp, flax is grown on at least 220,000 hectares in 2026, 85 to 90% of it in France, and in 2025 Europe produced 190,000 tonnes of long fibre. For a sense of scale: flax as a whole makes up less than half a per cent of world textile fibre production.

From field to fibre

Flax is not cut but pulled up by the roots, to preserve the fibres in the lower part of the stem. The stems then lie in rows in the field and ret: rain, dew, sun and soil micro-organisms break down the natural glues between the fibre and the woody core. Next comes scutching, which separates the long fibre, tow, shives and seeds, and then hackling, after which the long fibres are wet-spun into fine yarn.

Who is behind the marks

The European flax, linen and hemp industry is represented by the Alliance for European Flax-Linen & Hemp. Until January 2023 it was called CELC (the European Confederation of Flax and Hemp). It manages the two certifications you are most likely to see on labels.

Masters of FLAX FIBRE™ (formerly European Flax™)

A certification of fibre origin: it guarantees that the flax fibre was grown in Europe and can be traced from fibre to finished product. If you find the European Flax™ logo on an older product, it is the same certification under its original name.

Masters of LINEN™

A stricter mark for spinners, weavers and knitters. Since 15 September 2025 a new promise applies: every step of growing and processing is carried out by European companies. Right up to the finished fabric, all processing and trading steps – including subcontracting – must take place in Europe, meaning the EU, the United Kingdom and Switzerland. The only exception is a Tunisian plant belonging to one of the founding spinning mills. The yarn must be made exclusively from Masters of FLAX FIBRE™ certified fibre.

National marks

Mark	Managed by	What it guarantees
Belgian Linen™	Belgian Flax & Linen Association (part of the Fedustria federation)	Fabric woven in Belgium; at least 85% of its weight is flax grown in the EU
Irish Linen	Irish Linen Guild	Yarn spun in Ireland from 100% flax, with Irish weaving and design; the flax need not be grown in Ireland
Masters of LINEN™	Alliance for European Flax-Linen & Hemp	The whole chain, up to the fabric, in Europe
Masters of FLAX FIBRE™	Alliance for European Flax-Linen & Hemp	Fibre grown in Europe, traceable

With Irish linen it is worth noting that since the mid-20th century the fibre has been imported mainly from France, Belgium and the Netherlands, and spinning in Ireland has all but disappeared. Today "Irish" mostly speaks of the weaving and the craft.

The takeaway

"European linen" without a logo is the seller's claim. A Masters of LINEN™ or Masters of FLAX FIBRE™ logo means a certification system stands behind the origin. None of these marks, however, says anything about fabric weight, weave or finish – you can judge those using the glossary.