Plant Structure Phenotype

Plant structure phenotype describes the physical growth architecture and morphological expression of cannabis plants—how they branch, distribute foliage, and allocate biomass. This classification encompasses observable traits like internode spacing, branching angles, canopy density, and overall plant geometry, which are influenced by genetics, environmental conditions, and cultivation technique. Breeders and cultivators document these traits because structure directly affects light penetration, airflow, yield distribution, and harvest efficiency. Structure phenotypes are typically categorized along a spectrum from compact/bushy to tall/lanky, with many modern cultivars exhibiting hybrid expressions. Understanding structure phenotypes is essential for matching genetics to grow environments and production goals, as identical genetics may express different architectures under varied lightin

Breeders select for specific structure phenotypes to optimize canopy performance in target environments—indoor cultivators often favor dense, uniform branching, while outdoor breeders may prioritize vigor and disease resistance through open architecture. Structure is a heritable trait that breeders stabilize across generations to ensure predictable plant behavior in commercial cultivation.