Pocket Botanist
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Check these first
- Feel the soil to check for waterlogged conditions.
- Inspect the drainage holes for blockages.
- Look for signs of pests on the undersides of leaves.
Likely causes
Overwatering
Most likelyHow to tell: The lower leaves turn yellow and the soil feels constantly soggy.
What to do: Allow the top inch of soil to dry out slightly before watering again. Ensure the pot is not sitting in standing water.
Nutrient deficiency
PossibleHow to tell: General yellowing across the plant, often starting with older leaves.
What to do: Apply a balanced liquid fertilizer diluted to half strength. Do this once every 4 to 6 weeks during the growing season.
Find out what's wrong with your cow parsley
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
If the yellowing spreads rapidly to new growth, it is a sign of a serious problem. A few older leaves turning yellow at the base is normal as the plant grows.
Stopping it coming back
Avoid letting the plant sit in water and use well draining soil.
Cow parsley: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your cow parsley 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 trim them off with clean scissors to keep the plant looking tidy.
- Is yellowing always bad?
- Not always, as older leaves naturally die off. If it happens to many leaves at once, investigate the watering.
More problems with Cow parsley
- Why is my cow parsley drooping?
- Why does my cow parsley have spots on its leaves?
- Why is my cow parsley growing so tall and leggy?
- Why are my cow parsley's leaf tips turning brown?
- Why is my cow parsley not producing any flowers?
- Why are there bugs on my cow parsley?
- Why is my cow parsley wilting?
- Why are my cow parsley 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.