Plant Structure Density

Plant structure density refers to the physical compactness and bud-to-foliage ratio of cannabis phenotypes, ranging from airy, open structures to dense, tight internodal spacing. This trait is determined by both genetics and environmental factors, with some lineages consistently expressing tighter node spacing and heavier bud clustering than others. Density affects canopy airflow, harvest efficiency, and susceptibility to mold or mildew in humid conditions. Breeders document density as part of morphological phenotyping, often categorizing plants as 'loose,' 'moderate,' or 'dense' based on visual assessment during growth and flowering. Understanding density is useful for cultivation planning, as tight structures may require different humidity management and pruning strategies than airy types.

Breeders select for density traits when developing cultivars for specific environments or production methods. Dense phenotypes may offer higher bud yields per unit height, while looser structures often provide better air exchange and are sometimes preferred for outdoor or high-humidity settings.