Yellow Leaves on Oleander? How to Save Your Potted Plant
Yellow leaves on oleander often cause uncertainty – but usually, a simple care mistake is behind it.
Yellow leaves on oleander are a common problem that many hobby gardeners face. In most cases, the cause can be easily identified and remedied. Especially in summer, when the plant is in full bloom, yellow leaves often appear in the lower part of the shrub and eventually fall off. This not only looks unsightly but can lead to bare spots in the long term. But what is behind the yellow discoloration?
Water shortage as the most common cause
Oleander is very thirsty and requires regular watering, especially during hot summer days. If the soil in the pot dries out, the plant reacts with conspicuously yellow leaves. Those who water too infrequently risk root ball dryness – the typical damage pattern is numerous yellow leaves. Adequate water supply, ideally with lime-containing tap water, helps to avoid the problem. Large pots also store more moisture and prevent the roots from drying out.
Nutrient deficiency harms the leaf green
If the oleander lacks nitrogen or other important trace elements, the leaves first turn light green and eventually yellow. Older leaves at the lower part of the plant are particularly affected. Regular fertilization, especially during the flowering period, optimally supplies the oleander. A special container plant fertilizer or flowering plant fertilizer is particularly suitable.
Lack of Light and Incorrect Location
Oleander loves bright, sunny locations. If the plant is too dark or only exposed to light on one side, this can also lead to yellow leaves. An ideal spot is in full sun, as the plant knows from its Mediterranean home.
Natural Leaf Loss and Diseases
Oleander is evergreen, yet older leaves are shed after about two years – a natural process that cannot be prevented. However, if leaves first turn yellow and then brown, fungal infections or pests such as mealybugs or aphids may also be the cause. These problems occur more frequently in winter quarters. A severe infestation should be treated by removing affected plant parts and checking the care conditions.
Conclusion: With the right care, the problem of yellow leaves can usually be quickly brought under control. Regular monitoring of water, nutrient, and light supply is crucial.
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