Pocket Botanist
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Check these first
- Check the soil moisture to see if it is waterlogged.
- Inspect the roots for knots or galls if the plant is stunted.
- Look for signs of pests on the undersides of the leaves.
Likely causes
Root nematodes
PossibleHow to tell: The plant looks stunted and the leaves turn yellow prematurely. You might see knots or galls on the roots if you dig them up.
What to do: There is no easy cure for nematodes. Remove the affected plant and soil, and do not plant new peonies in that same spot for several years.
Overwatering
PossibleHow to tell: The leaves turn yellow and the stems feel soft or mushy. This happens if the soil stays soggy for too long.
What to do: Adjust your watering to every 7 to 14 days depending on the weather. Ensure the soil drains well and never let the roots sit in standing water.
Find out what's wrong with your peony
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
It is normal for leaves to yellow and fade in late autumn as the plant goes dormant. Worry if the yellowing happens in mid-summer or affects the whole plant.
Stopping it coming back
Provide well draining soil and avoid overwatering. Keep the garden bed free of weeds that might harbor pests.
Peony: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your peony 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
- Can I save a plant with nematodes?
- It is very difficult to treat them. It is usually better to remove the plant to protect your other garden beds.
- Is yellowing always a sign of disease?
- No, it can also be a natural part of the plant preparing for winter. If it happens in late fall, it is perfectly normal.
More problems with Peony
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.