Check these first
- Check the soil moisture by sticking your finger an inch deep.
- Inspect the drainage holes to ensure they are not clogged.
- Look at the underside of the leaves for any signs of pests.
Likely causes
Overwatering
Most likelyHow to tell: The leaves turn yellow and feel soft or mushy to the touch. You might also notice the soil stays wet for more than two weeks.
What to do: Stop watering immediately and let the top 2 inches of soil dry out. Ensure your pot has drainage holes and never let the plant sit in a saucer of standing water.
Nutrient deficiency
PossibleHow to tell: Older leaves turn yellow while the veins remain green. This often happens if the plant has been in the same pot for several years without fresh soil.
What to do: Apply a balanced liquid fertilizer diluted to half strength during the growing season. If the plant is severely root bound, repot it into a slightly larger container with fresh potting mix.
Find out what's wrong with your japanese mock orange
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, lowest leaves to yellow and drop occasionally as the plant grows. Worry if the yellowing is spreading rapidly across the entire canopy.
Stopping it coming back
Stick to a consistent watering schedule and only water when the top inch of soil feels dry.
Japanese Mock Orange: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your japanese mock orange 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 shears to keep the plant looking tidy. They will not turn green again.
- Can too much sun cause yellowing?
- Yes, intense direct sun can bleach leaves, making them look pale yellow or washed out. Move the plant to a spot with filtered light.
More problems with Japanese Mock Orange
- Why are there white, fuzzy things on my Japanese Mock Orange?
- What are these dark spots on my Japanese Mock Orange leaves?
- Why are the leaves on my Japanese Mock Orange curling?
- Why are my Pittosporum tobira leaf tips turning brown?
- Why is my Pittosporum tobira drooping?
- Why is my Pittosporum tobira dropping leaves?
- Why is my Japanese Mock Orange not blooming?
- How do I fix root rot on my Pittosporum tobira?
- Why is my Pittosporum tobira looking leggy?
Back to the Japanese Mock Orange 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.

