Canopy Coverage

Canopy coverage refers to the density and lateral spread of foliage across a cannabis plant's upper structure, typically assessed as a percentage of light interception or visual density. Breeders and cultivators classify plants on a spectrum from sparse to dense canopy phenotypes. This trait is influenced by branch architecture, leaf size, and internode spacing—each heritable through selective breeding. Canopy coverage affects light penetration to lower growth sites, influences airflow patterns, and impacts overall yield potential under controlled cultivation conditions. Understanding canopy coverage is essential for matching plant genetics to specific cultivation environments and training techniques.

Breeders track canopy coverage as a structural trait when developing cultivars for indoor vertical farming, outdoor field production, or specific training systems. Dense-canopy varieties often require deliberate pruning or supplemental airflow management, while sparse-canopy phenotypes may benefit from broader spacing or less training labor.