Check these first
- Feel the soil to see if it is soggy or bone dry.
- Check the drainage holes for blockages.
- Inspect the undersides of leaves for tiny pests.
Likely causes
Overwatering
Most likelyHow to tell: The lower leaves turn yellow and feel soft or mushy to the touch.
What to do: Stop watering immediately and let the top 5 centimeters of soil dry out. Ensure your pot has drainage holes so excess water can escape.
Nutrient deficiency
PossibleHow to tell: The leaves turn a pale yellow while the veins remain green.
What to do: Apply a balanced liquid fertilizer diluted to half strength every 2 to 4 weeks during the growing season. This provides the necessary minerals for healthy green growth.
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
It is normal for the oldest bottom leaves to yellow and drop occasionally. Be concerned if the yellowing spreads rapidly to the upper foliage.
Stopping it coming back
Always wait until the top few centimeters of soil are dry before watering again.
Geranium: yellow 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
- Should I cut off the yellow leaves?
- Yes, snip them off with clean scissors to keep the plant looking tidy and prevent potential rot.
- Can too much sun cause yellowing?
- Usually, too much sun causes scorching or bleaching, but it can stress a plant if it is also dehydrated.
More problems with Geranium
- Why is my garden geranium growing so leggy?
- How do I get rid of pests on my garden geranium?
- Why does my geranium have spots on its leaves?
- Why is my geranium not producing flowers?
- Why is my geranium wilting and showing root rot?
- Why are my geranium leaves curling?
- Why are my geranium leaf tips turning brown?
- Why is my geranium drooping?
- Why is my garden geranium dropping 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.

