Leaf Serration

Leaf serration refers to the degree and pattern of jagged or smooth edges on cannabis fan leaves, ranging from finely serrated (deeply notched edges) to smooth margins. This visible characteristic is influenced by genetics and can vary between individual plants within a strain, as well as across different growth stages. Serration patterns are often more pronounced on leaves developing under certain light conditions and nutrient balances. Breeders and cultivators use leaf serration as one observable morphological marker when documenting plant phenotypes, though it is not a primary selection criterion for commercial breeding. The trait appears consistently in lineage records and is frequently noted in detailed plant descriptions alongside other leaf characteristics such as size, color, and density.

Leaf serration serves as a useful documentation tool in phenotype assessment and can help distinguish between related cultivars or confirm genetic heritage within a strain family. While not directly selected for in most breeding programs, consistent serration patterns across a line may indicate stable genetic expression and are recorded as part of comprehensive plant morphology data.