Flax (Linum usitatissimum), one of the world’s oldest cultivated crops dating back to the Neolithic era, is valued for its fibre, seeds, and oil. Native to Europe and Asia, it is now grown widely in temperate regions, including China, Russia, Belgium, the United States, and Canada. Varieties grown for fibre typically produce fewer seeds than those cultivated for flaxseed and linseed oil. Linseed oil ranges in colour from golden yellow to amber and is slightly more viscous than most vegetable oils. Although food-grade oil is used in cooking, it is prone to rapid rancidity. Its exceptionally high content of omega-3 fatty acid alpha-linolenic acid (ALA) makes it nutritionally important, though whole or ground flaxseed is more commonly consumed.
Industrially, linseed oil is classified as a drying oil because it hardens when exposed to air. This property makes it useful in manufacturing paints, printing inks, linoleum, varnishes, stains, and oilcloth. It is also widely used in artists’ oil paints and as a protective coating for concrete structures, where it helps repel water and reduce corrosion of reinforcing steel.
In Kenya, flaxseed remains a minor and largely underdeveloped crop, produced on a small scale mainly for health food markets, oil extraction, and limited export. Some agro-processors source organic linseed locally, indicating a fragmented but emerging value chain. The crop performs best in cool, highland regions such as parts of the Rift Valley and Central Highlands. However, lack of reliable production data highlights its relatively low commercial importance compared to other oilseed crops.