Leaflet Narrow

Leaflet Narrow refers to cannabis plants exhibiting distinctly slender, thin leaflets along the leaf blade. This classification describes leaf morphology rather than potency or effect, and is often observed across diverse genetic backgrounds. Narrow leaflets are sometimes associated with sativa-dominant or equatorial landrace lineages, though the trait can appear in modern hybrids. Visual identification requires examining the width-to-length ratio of individual leaflets. Breeders document this trait during phenotype assessment to catalog diversity within breeding populations.

Growers and breeders track leaflet width as a morphological marker for genetic diversity studies and selective breeding programs. Narrow-leaflet phenotypes may influence light penetration and airflow characteristics within dense canopies, making the trait relevant for cultivation planning.