Check these first
- Touch the soil to see if it is soggy.
- Inspect the undersides of leaves for tiny bugs.
- Move the plant to a spot with brighter indirect light.
Likely causes
Overwatering
Most likelyHow to tell: The soil feels constantly wet and the lower leaves turn yellow and soft.
What to do: Stop watering immediately and let the top inch of soil dry out. Ensure your pot has drainage holes so extra water can escape.
Aphid infestation
PossibleHow to tell: You see tiny green or black insects clustered on the undersides of leaves or new growth.
What to do: Spray the plant with a gentle stream of water to knock them off. Use insecticidal soap once a week until the pests are gone.
Find out what's wrong with your chrysanthemum
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 very bottom leaves to yellow as the plant ages. Worry if the yellowing spreads rapidly to the top of the plant.
Stopping it coming back
Water only when the top inch of soil is dry and keep the plant in a well ventilated area.
Chrysanthemum: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your chrysanthemum 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, you can snip them off with clean scissors to help the plant look better and focus energy on healthy growth.
- Can yellow leaves turn green again?
- No, once a leaf turns yellow it will not recover. Focus on keeping the remaining leaves healthy.
Guides to these causes
More problems with Chrysanthemum
- Why is my florist's chrysanthemum drooping?
- What are these spots on my florist's chrysanthemum?
- Why is my florist chrysanthemum not blooming?
- What are these bugs on my florist chrysanthemum?
- Why is my florist chrysanthemum growing so tall and thin?
- Why are my chrysanthemum's leaf tips turning brown?
- Why is my chrysanthemum dropping its leaves?
- How do I fix root rot in my chrysanthemum?
- Why are my chrysanthemum leaves curling?
Back to the Chrysanthemum 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.

