Pest Susceptibility

Pest susceptibility refers to a cannabis plant's inherent vulnerability to insect infestations and mite colonization, determined by leaf morphology, trichome density, epidermal chemistry, and plant architecture. This trait varies significantly across cultivars and landraces, with some genetic lines exhibiting natural resistance mechanisms while others show pronounced susceptibility to common cannabis pests like spider mites, aphids, whiteflies, and thrips. Breeders and cultivators track pest susceptibility because it directly impacts cultivation costs, input requirements, and crop viability across different growing environments. Understanding a strain's pest pressure tolerance is essential for integrated pest management (IPM) strategies and for selecting parent plants in breeding programs aimed at resilience.

Breeders working on resilience and indoor cultivation efficiency often select for low pest susceptibility traits, crossing susceptible cultivars with genetically robust landraces or wild relatives known for pest resistance. Conversely, some breeding programs intentionally work with susceptible genetics if other desirable traits—yield, cannabinoid profile, flavor—are present, accepting that robust