The Landscape of Flax Production: Agronomic Drivers, Crop Management, and Approaches to Emerging Challenges

Flax (Linum usitatissimum L.) is among the earliest domesticated crops and remains agronomically and economically important due to its dual use for fibre and seed (oil) production. In recent years, renewed interest in flax has emerged from its role in diversified and sustainable agriculture, human nutrition, and bio-based industrial applications. This review provides a comprehensive agronomic synthesis of global flax production, integrating worldwide production trends, genetic resource availability, and the main agronomic drivers governing crop establishment, growth, yield, and quality. Particular emphasis is placed on climatic requirements, soil and nutrient management, crop management practices, and water use, as well as on the contrasting requirements of fibre flax and seed flax. Despite growing research efforts, agronomic knowledge on flax remains fragmented across environments, production purposes, and management strategies, limiting the translation of experimental findings into robust, environment-specific crop management recommendations. Sustainable intensification of flax production will therefore depend on integrating optimized agronomic practices with breeding strategies that exploit existing genetic diversity to improve yield stability, quality, and resilience under increasing climatic variability.