Fiber Traits

Fiber traits in cannabis refer to the structural and compositional characteristics of plant stems and stalks that determine their suitability for textile, cordage, and biomaterial applications. These traits include stalk strength, fiber bundle density, bast fiber percentage, and stem diameter—characteristics largely independent of cannabinoid or terpene production. Cannabis sativa subspecies and certain landrace populations have been cultivated for millennia specifically for fiber yield and quality, creating distinct breeding lineages separate from drug-type genetics. Modern fiber-focused breeding emphasizes rapid stem elongation, reduced branching, and high cellulose content to maximize processing efficiency. Understanding fiber traits requires documentation of plant architecture, harvest maturity timing, and retting properties, which differ significantly from flower-oriented selection

Breeders working in industrial hemp and dual-purpose programs actively select for fiber traits through multi-generational pedigree tracking and stem cross-section analysis. Fiber-dominant lines are typically outcrossed with complementary genetics to maintain stalk integrity while managing plant height and lodging resistance for mechanical harvest compatibility.