Leaf Morphology Broad Leaflet

Broad leaflet morphology refers to cannabis plants displaying wider, more expansive leaf blade structures compared to narrow-leaflet phenotypes. This trait is governed by polygenic inheritance and has been observed across diverse strain families, though it is often more prevalent in indica-descended genetics. Breeders distinguish broad vs. narrow leaflet expression as a visual marker during vegetative staging and phenotype selection. The wider surface area of broad leaflets may influence light interception and photosynthetic efficiency under different canopy conditions. This morphological classification is independent of cannabinoid or terpene profiles, but serves as a useful organizational tool in breeding records and cultivation planning.

Breeders working in strain stabilization frequently track leaflet width as a phenotypic descriptor for consistency across generations. Broad leaflet traits are often retained or selected for in breeding lines where canopy structure and vigor benchmarking are cultivation priorities.