Why does your Begonia grandis have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Begonia grandis is highly sensitive to moisture retention; excessive water in the substrate leads to anaerobic conditions that cause root decay, preventing nutrient transport to leaves.
A lack of available nitrogen prevents the synthesis of chlorophyll in older Begonia leaves, causing them to turn uniformly yellow before eventually dropping.
Insufficient light prevents the plant from maintaining its metabolic processes, leading to chlorosis as the plant cannot support its entire leaf mass.
Begonia grandis prefers stable, warm temperatures; sudden drops in temperature can shock the vascular system, triggering leaf yellowing and abscission.
Your plant might also be experiencing one of these issues:
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