Bract Coverage

Bract coverage refers to the density and extent of small leaf-like structures (bracts) that surround and protect developing flower clusters in cannabis. High bract coverage is characterized by tightly packed, resin-rich leaves that envelope the floral material, while low bract coverage exposes more of the underlying flower tissue. This trait is influenced by genetics, environmental conditions during flowering, and plant age at harvest. Bract density affects both the visual appearance and the physical handling properties of dried flower, making it a notable phenotypic marker in breeding programs. Lineage records frequently report bract coverage as a distinguishing feature between cultivars, particularly within Indica-leaning and Sativa-leaning populations.

Breeders working in this category select for bract coverage density based on cultivation goals: dense bract coverage is often prioritized for indoor production and extraction workflows, while varied bract profiles are maintained across breeding lines to preserve genetic diversity. Understanding bract architecture also informs predictions about yield efficiency and processing characteristics in com