Botrytis Avoidance

Botrytis avoidance refers to genetic traits that confer natural resistance or reduced susceptibility to Botrytis cinerea (grey mold), a common fungal pathogen in cannabis cultivation. Breeders working in this category prioritize plant structures, terpene profiles, and growth patterns that discourage fungal colonization—such as loose flower structure, rapid moisture evaporation, and airflow-friendly canopy architecture. Lineage records frequently report that certain landrace and modern cultivars demonstrate lower infection rates under high-humidity conditions, though environmental management remains critical for disease control. This trait family is often evaluated in breeding programs focused on cultivation resilience and outdoor durability. Selection for botrytis avoidance does not eliminate fungal risk but may reduce pressure during long flowering cycles or in humid climates.

Breeders incorporate botrytis-avoidance traits by selecting for open bud structure, faster flower maturation, reduced calyx density, and terpene profiles associated with antifungal properties. These selections are particularly valuable in programs targeting outdoor cultivation, humid regions, or extended-season genetics.