Bract Development

Bract development refers to the growth and maturation of the leaf-like structures (bracts) surrounding cannabis flower clusters, rather than a terpene itself. These modified leaves contain resin glands and accumulate cannabinoids and terpenes as the plant matures. Bract density, thickness, and trichome coverage are key morphological traits breeders select for, as they directly influence final product quality and yield potential. Lineage records frequently report variation in bract structure across different genetic backgrounds, with some cultivars expressing tight, resin-heavy bracts while others develop more open or airy formations. Understanding bract development is essential for evaluating plant structure and predicting harvest characteristics.

Breeders prioritize bract development as a visible indicator of flower maturity and resin production. Dense, well-developed bracts with robust trichome coverage are commonly selected traits in breeding programs targeting high-quality flower phenotypes.