Botrytis Susceptibility

Botrytis susceptibility refers to a plant's genetic predisposition to infection by Botrytis cinerea (gray mold), a common fungal pathogen in cannabis cultivation. This trait is not a terpene but rather a phenotypic characteristic influenced by plant structure, resin chemistry, and environmental factors. Strains with dense flower structure and high humidity sensitivity are often tagged as more susceptible, while those with airflow-friendly architecture and certain secondary metabolites show greater resistance. Breeders working in humid climates or indoor environments frequently select against botrytis susceptibility to reduce crop loss. Understanding this trait is critical for cultivation planning, regardless of cannabinoid or terpene profile.

Breeders prioritize botrytis resistance by selecting parent plants with open flower structure, faster dry times, and natural antimicrobial compounds. Lines with documented resistance genes are increasingly valued in breeding programs targeting stable, resilient cultivars for variable growing conditions.