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Check these first
- Feel the soil for excess moisture.
- Check the drainage holes for blockages.
- Look for signs of pests on the underside of the needles.
Likely causes
Overwatering
Most likelyHow to tell: The needles turn a pale yellow and feel soft or limp. The soil remains soggy even days after watering.
What to do: Stop watering immediately and let the top two inches of soil dry out. Ensure your pot has proper drainage holes so water can escape.
Nutrient Deficiency
PossibleHow to tell: The yellowing appears gradually across the older foliage. The plant may look generally weak or stunted.
What to do: Apply a balanced liquid fertilizer diluted to half strength. Do this once during the early spring to support new growth.
Find out what's wrong with your japanese cedar
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
Yellowing that affects the entire plant at once is a major concern. A few yellow needles near the trunk are normal as the plant ages.
Stopping it coming back
Use a well draining potting mix and avoid letting the plant sit in standing water.
Japanese Cedar: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your japanese cedar 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
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Questions people ask
- Is yellowing a sign of too much sun?
- Yes, if the plant is in harsh, direct afternoon sun, the needles can bleach yellow. Move it to a spot with partial shade.
- Can I fix yellow leaves?
- Unfortunately, yellow needles will not turn green again. Focus on preventing the yellowing from spreading to new growth.
More problems with Japanese Cedar
Back to the Japanese Cedar 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.