Leaf Serration Patterns

Leaf serration patterns—the shape and depth of edges on cannabis leaves—represent a morphological trait influenced by genetics and growing conditions rather than a terpene. Breeders observe serration characteristics as visual markers of strain identity and plant vigor. Patterns range from finely serrated (narrow, numerous teeth) to coarsely serrated (broad, sparse teeth), with some cultivars displaying intermediate forms. These patterns are commonly associated with specific lineages and regional breeding programs, making them useful for phenotype identification in cultivation and seed selection.

Breeders document leaf serration as part of strain descriptor systems to distinguish phenotypes within families and track stability across generations. Consistent serration patterns help identify pure lines and can indicate adaptive traits linked to environmental stress response or nutrient efficiency.