Check these first
- Look closely at the undersides of the leaves.
- Check the tips of new growth for clusters of insects.
- Shake the plant gently to see if anything flies up.
Likely causes
Aphids
Most likelyHow to tell: Small, pear-shaped insects cluster on new growth and flower buds. They cause leaves to look distorted or curled.
What to do: Spray the plant with a strong stream of water to knock them off. For persistent infestations, apply insecticidal soap every 5 to 7 days.
Whiteflies
PossibleHow to tell: Tiny white, moth-like insects fly up in a cloud when you brush against the plant. They leave behind a sticky residue on the leaves.
What to do: Use yellow sticky traps to catch the adults. Wipe the undersides of leaves with a damp cloth to remove eggs and larvae.
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
A few insects are usually manageable, but if you see sticky residue or the plant is losing vigor, you must treat it immediately.
Stopping it coming back
Inspect your plants weekly for early signs of pests, especially when bringing new plants into your home or garden.
Geranium: pests? 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 these bugs kill my plant?
- If left untreated, heavy infestations can severely weaken your Cranesbill and stunt its growth. Early detection is key to keeping it healthy.
- Can I use neem oil?
- Yes, neem oil is an effective organic treatment for both aphids and whiteflies. Apply it in the evening to avoid burning the leaves in the sun.
Guides to these causes
More problems with Geranium
- Why are my Cranesbill leaves turning yellow?
- What are these spots on my Cranesbill leaves?
- Why is my geranium not blooming?
- How do I fix root rot in my geranium?
- Why is my geranium growing so tall and thin?
- Why are my geranium's leaf tips turning brown?
- Why is my geranium drooping?
- Why is my geranium losing its leaves?
- Why are my geranium leaves curling?
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.

