Pocket Botanist
Check these first
- Inspect the undersides of leaves for signs of moisture or pests.
- Check if the spots are spreading rapidly after rain.
- Look for patterns that match sun exposure.
Likely causes
Fungal Leaf Spot
Most likelyHow to tell: You will see brown or black circular spots often with a yellow halo. These appear during humid or rainy weather.
What to do: Remove and destroy all infected leaves immediately to stop the spread. Improve airflow around the vine by pruning back crowded branches. Avoid overhead watering to keep the leaves dry.
Sunscald
PossibleHow to tell: These spots look like bleached or papery patches on leaves exposed to intense afternoon sun. They appear suddenly after a heatwave.
What to do: Provide a bit of shade during the hottest part of the day if possible. Ensure the plant is well watered so it can handle the heat better.
Find out what's wrong with your boston ivy
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
Worry if the spots cover more than half of the foliage or cause premature leaf drop. A few spots here and there are normal in a wet summer.
Stopping it coming back
Keep the area around the base of the vine clear of debris and water only at the soil level.
Boston ivy: spots? Check yours with a photo
Every plant is a little different. Take a photo of your boston ivy 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
- Should I use a fungicide?
- Usually, you do not need one. Good sanitation and airflow are far more effective for Boston ivy.
- Will the leaves heal?
- No, the damaged tissue will not turn green again. Focus on keeping the new growth healthy.
Guides to these causes
More problems with Boston ivy
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.