Leaf Necrosis

Leaf necrosis refers to the darkening, browning, or death of leaf tissue that can occur during cannabis cultivation. This aroma descriptor is uncommon and typically indicates plant stress rather than a desirable sensory profile—it describes musty, decomposing, or hay-like notes sometimes associated with damaged or senescing plant material. Necrotic tissue can result from nutrient deficiency, pathogen pressure, environmental stress, or late-stage senescence. While not a primary breeding target, understanding necrosis markers helps cultivators recognize plant health issues early. Genetic predisposition to early senescence or stress sensitivity varies across cultivars and is tracked in breeding records.

Breeders typically select *against* necrosis-prone phenotypes, favoring lines with vigorous, disease-resistant foliage and delayed senescence. However, some research programs study stress-response genetics to map resilience traits in challenging growing environments.