Leaf Shape Narrow

Narrow leaf shape refers to cannabis plants displaying elongated, thin leaflets characteristic of sativa-leaning genetics. This trait is commonly associated with cannabis strains originating from equatorial and tropical regions, where narrow leaves may help plants manage intense solar exposure and humidity. Narrow-leafed varieties often exhibit longer flowering periods and taller plant structures compared to their broad-leafed counterparts. Breeders frequently document this morphological feature as a phenotypic marker when cataloging strain lineages and regional genetic expressions.

Breeders working in sativa-dominant lines prioritize narrow leaf expression as a phenotypic indicator of genetic origin and flowering time. Backcrossing programs often track leaf morphology to stabilize desired sativa characteristics across generations.