Blade Shape

Blade shape refers to leaf morphology characteristics in cannabis, where foliage ranges from narrow, pointed leaflets to broad, rounded forms. This trait is influenced by both genetics and environmental conditions, with some cultivars displaying consistently narrow leaves across generations while others exhibit wider, more rounded geometry. Breeders working in cannabis genetics have long observed blade shape as a heritable trait that can be tracked through pedigrees, though expression varies based on light intensity, nutrient availability, and growth stage. Narrow-bladed varieties are often associated with sativa-dominant lineages, while broader leaves commonly appear in indica-influenced genetics, though exceptions exist across both populations. Understanding blade shape's genetic basis helps breeders predict plant architecture and optimize cultivation strategies for specific growing en

Blade shape serves as a visual phenotypic marker that breeders use to identify and select parent plants, particularly when combined with other morphological traits. Consistent leaf architecture can indicate genetic stability within a line and help breeders maintain trait expression across seed generations.