Botrytis Susceptibility

Botrytis susceptibility refers to a cannabis plant's vulnerability to Botrytis cinerea (gray mold), a fungal pathogen that thrives in humid, poorly ventilated environments. This classification tracks genetic and phenotypic factors that influence infection risk, including flower density, trichome coverage, and leaf structure. Plants with dense, compact flowers and tightly clustered foliage are often tagged as higher-susceptibility phenotypes, while some cultivars show improved air circulation or reduced moisture retention. Susceptibility varies significantly across strain families, with some lineages demonstrating inherent resistance traits through breeding. Understanding botrytis susceptibility is critical for cultivation planning, particularly in regions with high humidity or indoor operations where environmental control is essential.

Breeders selecting for outdoor cultivation or humid climates actively work with botrytis-resistant genetics, prioritizing open flower structures and faster drying times. This trait is frequently balanced against other desirable characteristics like yield density and cannabinoid expression, requiring strategic crosses.