Interveinal Chlorosis

Interveinal chlorosis is a condition where cannabis leaves display yellowing between the veins while the veins themselves remain green. This pattern typically indicates nutrient deficiency, most commonly iron, magnesium, or manganese, though environmental stress factors like pH imbalance, root damage, or cold temperatures can also trigger the symptom. The condition is distinguished from general yellowing because the vein network retains chlorophyll while surrounding leaf tissue loses pigmentation. Growers and breeders monitor interveinal chlorosis as a diagnostic marker for cultivar nutrient requirements and environmental sensitivity. Some genetic lines show greater predisposition to this symptom under specific growing conditions, making it relevant for phenotype selection and cultivation protocol development.

Breeders track interveinal chlorosis patterns across phenotypes to identify lines with stronger nutrient uptake efficiency or greater environmental resilience. Understanding which cultivars express this symptom under standard conditions helps establish baseline nutrition profiles and informs selection for more stable, consistent plant performance.