Node Spacing

Node spacing refers to the distance between leaf nodes along a plant's main stem and branches. This structural trait is determined by genetics and influences overall plant architecture, canopy density, and light penetration. Tight node spacing (short internodes) produces compact plants with closely-stacked foliage, while wide spacing (long internodes) creates more open, airy structures. Node spacing affects cultivation efficiency: compact phenotypes suit limited vertical space, whereas open structures may facilitate air circulation. The trait is often polygenic and can be influenced by environmental factors like light intensity, though genetic baseline varies considerably among lineages.

Breeders select for specific node spacing to match target growing environments and desired plant forms. Compact node spacing is often favored in indoor and space-restricted settings, while some outdoor breeders prefer more open structures for climate resilience and disease management.