Why does your Citrus aurantium have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Excessive soil moisture or poor drainage in Citrus aurantium leads to fungal attack on the root system, causing the tree to shed leaves rapidly as it loses the ability to transport water. This is particularly common in citrus when the substrate remains saturated for extended periods.
Bitter orange is sensitive to sudden frost or extreme heat waves, which triggers a physiological defense mechanism known as abscission. Rapid fluctuations in temperature cause the tree to drop foliage to conserve moisture and energy.
While leafminers primarily cause serpentine tunnels, a heavy infestation on young growth can cause significant physiological stress and premature leaf senescence in Citrus aurantium. This often leads to secondary infections that force the tree to shed affected leaves.
A severe lack of mobile nutrients like Nitrogen or Magnesium prevents the leaves from maintaining chlorophyll levels, leading to chlorosis and eventual drop. This is common in citrus trees planted in depleted or overly acidic soils.
Your plant might also be experiencing one of these issues:
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