Check these first
- Inspect the undersides of the curled leaves for aphids.
- Touch the soil to see if it is bone dry.
- Check the plant location for intense afternoon sun exposure.
Likely causes
Aphids
Most likelyHow 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.
Heat Stress
PossibleHow 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.
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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
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
- Why are my geranium's leaves turning yellow?
- Why is my geranium growing so leggy?
- How do I get rid of pests on my geranium?
- Why is my geranium drooping?
- Why are there spots on my geranium leaves?
- Why is my geranium not blooming?
- Why is my geranium's stem turning black and mushy?
- Why are my geranium's leaf tips turning brown?
- Why is my geranium losing its leaves?
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.

