Leaf Size Narrow

Narrow leaf structure is a morphological trait observed across cannabis genetics, characterized by thinner, more elongated leaflets compared to broad-leafed varieties. This phenotype appears in strains with documented ancestry in certain geographic regions and breeding programs that have selected for this trait over generations. Narrow leaves are commonly associated with sativa-dominant lineages and plants adapted to specific environmental conditions. Breeders document this trait as it can influence light penetration through the canopy, nutrient uptake patterns, and overall plant architecture during cultivation cycles.

Growers and breeders track leaf width as a selection criterion when developing cultivars for specific growing environments or structural goals. Narrow-leafed genetics may be crossed deliberately to introduce this morphological characteristic into breeding projects targeting particular phenotypic expressions.