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Geranium · Pelargonium

Why are my geranium leaves curling?

It is less common for geraniums to have curling leaves, so this usually points to a pest infestation or extreme heat stress. Check the undersides of your leaves for tiny insects first.

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curling leaves on a plant
Photo: Freshclover, CC BY-SA 4.0

Check these first

  1. Inspect the undersides of the curled leaves for aphids.
  2. Touch the soil to see if it is bone dry.
  3. Check the plant location for intense afternoon sun exposure.

Likely causes

  1. Aphids

    Most likely

    How to tell: You will see clusters of tiny green or black insects on the undersides of leaves or near new growth. They cause leaves to curl and distort as they suck the plant sap.

    What to do: Spray the plant thoroughly with insecticidal soap or a strong stream of water to knock them off. Repeat this every 5 to 7 days until you no longer see any bugs.

  2. Heat Stress

    Possible

    How to tell: The leaves curl inward and may feel dry or brittle to the touch during intense summer heat. This is the plant trying to reduce its surface area to save moisture.

    What to do: Move your geranium to a spot with afternoon shade if temperatures stay above 90 degrees. Water deeply every 3 to 5 days to ensure the roots stay hydrated.

Curling leaves on other plants

Find out what's wrong with your geranium

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

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When to worry

Worry if the curling is accompanied by sticky residue on the leaves, which indicates a heavy aphid infestation. It is normal for older leaves to curl slightly as they age and prepare to drop.

Stopping it coming back

Keep your geraniums well spaced to improve airflow and check them weekly for pests. Consistent watering helps the plant handle heat without curling.

Geranium: curling leaves? Check yours with a photo

Every plant is a little different. Take a photo of your geranium and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

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Questions people ask

Will my curled leaves flatten out again?
Usually, once a leaf is distorted by pests or heat, it will not return to its original shape. Focus on keeping new growth healthy and flat.
Can I just pick off the curled leaves?
Yes, you can safely remove them. This helps the plant focus its energy on healthy new growth.

Guides to these causes

More problems with Geranium

Back to the Geranium guide

This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.