Why does your Citrus paradisi have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Excessive moisture in the soil deprives grapefruit roots of oxygen, leading to Phytophthora root rot. This prevents the tree from supporting its foliage, causing leaves to yellow and drop suddenly.
Grapefruit trees are sensitive to sudden temperature fluctuations, especially cold snaps or extreme heatwaves. Rapid changes trigger a stress response where the tree sheds leaves to conserve moisture and energy.
A lack of available nitrogen prevents the production of chlorophyll, causing older leaves to turn pale yellow and drop prematurely. This often occurs in citrus trees planted in depleted or highly leached soils.
While larvae typically cause serpentine mines on leaves, severe infestations can cause significant leaf deformation and premature abscission. The physical damage to the leaf tissue disrupts photosynthesis and leads to shedding.
Your plant might also be experiencing one of these issues:
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