Leaves turn yellow because they lose chlorophyll, the green pigment responsible for absorbing sunlight and making food. This loss of color is a distress signal known as chlorosis. It typically happens for one of four main reasons:
Watering Issues: Both overwatering and underwatering cause moisture stress. Overwatered roots suffocate and rot, while underwatered plants drop older leaves to conserve water.
Nutrient Deficiencies: A lack of essential nutrients like nitrogen, iron, or magnesium prevents the plant from producing chlorophyll. This often causes distinct yellowing between the green veins of the leaf
Light Imbalances: Too little light starves the plant, while too much direct sunlight can scorch or bleach the leaves.
Seasonal Changes & Aging: In autumn, deciduous trees intentionally break down chlorophyll to prepare for winter, revealing hidden yellow pigments. Similarly, older leaves on houseplants will naturally yellow and fall off as the plant
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Dinesh said:
Watering Issues: Both overwatering and underwatering cause moisture stress. Overwatered roots suffocate and rot, while underwatered plants drop older leaves to conserve water.
Nutrient Deficiencies: A lack of essential nutrients like nitrogen, iron, or magnesium prevents the plant from producing chlorophyll. This often causes distinct yellowing between the green veins of the leaf
Light Imbalances: Too little light starves the plant, while too much direct sunlight can scorch or bleach the leaves.
Seasonal Changes & Aging: In autumn, deciduous trees intentionally break down chlorophyll to prepare for winter, revealing hidden yellow pigments. Similarly, older leaves on houseplants will naturally yellow and fall off as the plant