Check these first
- Feel the soil moisture level with your finger.
- Inspect the drainage holes for blockages.
- Check the undersides of leaves for signs of pests.
Likely causes
Overwatering
Most likelyHow to tell: The leaves turn yellow and feel soft or mushy to the touch. You might notice a sour smell coming from the soil.
What to do: Stop watering immediately and let the top 3 inches of soil dry out. Ensure your pot has drainage holes and never leave the plant sitting in a saucer of water.
Nutrient deficiency
PossibleHow to tell: The leaves turn yellow while the veins remain green. This often happens if the plant has been in the same container for too long.
What to do: Apply a balanced liquid fertilizer diluted to half strength every 4 weeks during the growing season. If the plant is in a container, consider repotting it into fresh, nutrient rich soil.
Find out what's wrong with your japanese wisteria
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 leaves at the base of the vine to yellow and drop in late summer. Be concerned if new growth is yellowing or if the yellowing spreads rapidly across the entire plant.
Stopping it coming back
Maintain a consistent watering schedule and provide a high quality fertilizer during the spring and summer months.
Japanese wisteria: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your japanese wisteria 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. This also helps you see if the yellowing is continuing to spread.
- Can too much sun cause yellow leaves?
- Japanese wisteria loves full sun, so it is very unlikely to yellow from too much light. If your plant is in a very hot spot, ensure it gets enough water to compensate for the heat.
More problems with Japanese wisteria
- Why is my Japanese wisteria not flowering?
- Why are there spots on my Japanese wisteria leaves?
- What are these pests on my Japanese wisteria?
- Why are my Japanese wisteria leaf tips turning brown?
- Why is my Japanese wisteria drooping?
- Why is my Japanese wisteria dropping leaves?
- Why is my Japanese wisteria suffering from root rot?
- Why is my Japanese wisteria growing so leggy?
Back to the Japanese wisteria 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.

