Microbial Contamination

Microbial contamination is not a terpene, but rather an unwanted presence of bacteria, fungi, or molds in cannabis plant material or extracts. Contamination can occur at any stage—cultivation, drying, storage, or processing—and may compromise product safety and shelf stability. Common contaminants include Aspergillus, Botrytis, E. coli, and Salmonella. Testing for microbial load is a standard quality-control measure in regulated markets. Breeders and cultivators focus on genetics and environmental controls that naturally resist mold and pathogenic microbes.

Cultivators select for plant vigor, leaf structure, and airflow characteristics that reduce fungal pressure in humid environments. Genetic lines with tighter node spacing, lower canopy density, or natural resistance to powdery mildew and botrytis are preferred for disease-prone regions.