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My Geraniums Have Yellowing Leaves

Geraniums are annual flowers producing blooms in red, pink, white and purple colors. The leaves on geraniums are usually a medium to dark green color. However, certain conditions cause them to turn yellow.

  1. Plant Disease

    • Root rot disease is caused by excessive moisture in the soil. This is often caused by over-watering. Yellow leaves are the first sign of root rot on geraniums. To prevent root rot, plant the geranium in well-drained soil. Additionally, allow the geranium's soil to dry out completely between waterings.

    Considerations

    • Geraniums are often grown in containers. However, if a geranium outgrows the container, the leaves may turn yellow. To prevent this, plant geraniums in a pot that is at least 8 inches in diameter.

    Significance

    • Lack of nutrients can cause leaves on a geranium to turn yellow and drop off. Fertilize the geranium with a water-soluble fertilizer every two weeks.

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Growing Annuals
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