Leaf Serration Pattern

Leaf serration pattern describes the shape and edges of cannabis leaves, ranging from smooth to deeply jagged margins. This trait is influenced by both genetics and phenotypic expression, with serration intensity varying across cultivars and environmental conditions. Breeders have observed that serration patterns often correlate with specific regional landrace lineages and can be a visual marker during seedling and vegetative stages. Fine, deeply serrated leaves are commonly associated with sativa-dominant genetics, while broader, less serrated foliage frequently appears in indica-dominant lines. Serration depth has no direct relationship to cannabinoid or terpene profiles, but remains useful for phenotype identification and breeding documentation.

Breeders use leaf serration as a rapid visual marker for early phenotype sorting and lineage verification during vegetative growth. Consistent serration patterns within a cultivar can help identify true-to-type plants and guide selection for preservation work or hybrid crosses.