Plant Structure Internode Spacing

Internode spacing refers to the distance between leaf nodes along a cannabis stem—a structural trait distinct from aroma but often documented alongside terpene profiles in breeding records. Compact internodes (short distances) produce denser, bushier plants, while elongated internodes create taller, more open canopies. Breeders working in this category track internode length as a heritable trait that influences plant architecture, light penetration, and growing requirements. Lineage records frequently report internode characteristics as part of phenotypic descriptions, particularly in photoperiod and feminized seed lines. This structural trait interacts with grow environment, nutrient availability, and genetic background, making consistent documentation valuable for cultivators and breeders comparing cultivar performance across conditions.

Breeders select for internode spacing to develop cultivars suited to specific growing systems—compact phenotypes for dense canopies or SOG, elongated types for SCROG training. Understanding heritability of this trait across generations helps stabilize desired plant architecture in new seed lines.