Yellowing of lower leaves in a rubber tree (Ficus elastica), also known as the Indian rubber tree, can be caused by
various factors. Here are some common reasons why the lower leaves may turn yellow:
Natural leaf shedding: It is normal for older leaves at the bottom of the rubber tree to turn yellow and drop off.
As the plant grows, it sheds its lower leaves to redirect energy to newer growth. If only the lower leaves are yellowing,
and the upper leaves are healthy, this could be a natural part of the plant's growth cycle.
Overwatering: Rubber trees are susceptible to root rot if they are overwatered. Excessive moisture in the soil can lead to
the roots being deprived of oxygen, causing them to decay. As a result, the plant may show symptoms like yellowing
leaves. Ensure that the plant is in well-draining soil and water it only when the top inch of the soil feels dry to the touch.
Underwatering: On the flip side, if the rubber tree is consistently underwatered, it can also lead to yellowing leaves.
The lack of water restricts nutrient uptake, causing the leaves to turn yellow and eventually brown.
Check the soil regularly and water the plant adequately when needed.
Light exposure: Rubber trees prefer bright, indirect light. If they receive too little light, especially in indoor settings,
their lower leaves may start to yellow and drop. Consider moving the plant to a spot with better lighting conditions.
Nutrient deficiencies: Yellowing leaves can be a sign of nutrient deficiencies, such as nitrogen, iron, or magnesium.
Consider using a balanced liquid fertilizer or specific micronutrient supplements to address any deficiencies.
Pests and diseases: Pests like spider mites or diseases like leaf spot can cause yellowing of leaves.
Inspect the plant for any signs of pests or diseases, such as webbing, spots, or lesions, and take appropriate measures
to treat the issue.
Environmental stress: Sudden changes in temperature, humidity, or exposure to drafts can stress the rubber tree and
cause leaf yellowing. Try to maintain stable environmental conditions for the plant.
To determine the specific cause of yellowing leaves in your rubber tree, carefully assess its care routine,
environmental conditions, and look for any signs of pests or diseases. Making appropriate adjustments to its care,
such as adjusting watering habits, improving lighting conditions, or addressing nutrient deficiencies,
can help the plant recover and promote healthy foliage growth.
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