Why does your Citrus limon have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Excessive moisture or poor drainage in the soil leads to Phytophthora species attacking the root system, making it impossible for the lemon tree to support its foliage. This results in rapid wilting and sudden abscission of leaves.
Citrus trees have sensitive root systems that react quickly to extreme shifts in soil moisture. Sudden leaf drop is a defense mechanism to reduce transpiration when the tree cannot access water or is suffocating in saturated soil.
Lemon trees are highly sensitive to sudden cold snaps or frost, which can damage the vascular tissue. A rapid drop in temperature causes the tree to shed leaves to protect its core structure.
Severe lack of essential macronutrients can lead to chlorosis followed by premature leaf senescence and drop. While usually a slower process, an acute deficiency in a stressed tree can trigger sudden leaf loss.
Your plant might also be experiencing one of these issues:
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