Broad Leaflet Structure

Broad leaflet structure refers to cannabis plants exhibiting wider, more expansive leaf blade morphology compared to narrow-leafed phenotypes. This trait is commonly associated with indica-dominant genetics and certain landrace populations, though individual plants within sativa-leaning lineages occasionally express broader leaflets. The characteristic involves increased surface area per leaflet, which can influence light interception and photosynthetic efficiency under different growing conditions. Breeders working in this category often observe broader leaflet expression correlating with shorter internodal spacing and denser canopy architecture. Documentation of this trait appears frequently in breeding records alongside plant structure and yield-potential evaluations.

Breeders select for or against broad leaflet structure depending on cultivation environment and desired plant architecture. Broader leaflets are often retained in indoor and controlled-environment breeding programs where light penetration and airflow management are critical factors.