Extended Internodes

Extended internodes refer to Cannabis plants displaying notably longer distances between leaf nodes along the main stem and branches. This trait is commonly associated with sativa-dominant lineages and equatorial landraces, where vertical stretch serves adaptive functions in dense canopy environments. Breeders observe extended internodal spacing as a heritable characteristic influenced by both genotype and photoperiod sensitivity. The phenotype contrasts with compact, short-internode morphologies typical of indica-influenced genetics. Extended internodes affect canopy structure, light penetration, and cultivation requirements, making this classification relevant for both indoor and outdoor breeding programs.

Breeders working in this category select for extended internodes when developing tall, vertically-oriented cultivars suited to outdoor or high-ceiling indoor systems. This trait is often crossed into hybrid lineages to increase plant height and branch spread, offering phenotypic diversity for different growing environments and spacing strategies.