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Bell Pepper · Capsicum annuum

Why are there dark spots on my bell pepper leaves?

Dark spots on your pepper leaves often point to a fungal or bacterial infection. This usually happens when the foliage stays wet for too long. Check the spots to see if they are spreading.

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spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Examine the spots for yellow halos or concentric rings.
  2. Check if you have been watering the leaves directly.
  3. Look for signs of poor airflow around the plant.

Likely causes

  1. Bacterial Leaf Spot

    Most likely

    How to tell: These appear as small, dark, water-soaked spots that may have a yellow halo. They often lead to leaf drop if the infection is severe.

    What to do: Remove and destroy all infected leaves immediately to stop the spread. Avoid overhead watering and ensure your plants have plenty of airflow.

  2. Fungal Leaf Spot

    Possible

    How to tell: These spots are usually circular with concentric rings or a tan center. They thrive in humid, rainy weather.

    What to do: Apply a copper-based fungicide according to the label instructions. Keep the area around the base of the plant clean of debris.

Leaf spots on other plants

Find out what's wrong with your bell pepper

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

If the spots are spreading rapidly and causing leaves to fall off, your harvest is at risk. A few isolated spots on older leaves are usually not a major concern.

Stopping it coming back

Water only at the base of the plant and keep the foliage dry. Space your plants 18 to 24 inches apart to encourage good air circulation.

Bell Pepper: spots? Check yours with a photo

Every plant is a little different. Take a photo of your bell pepper 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.

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Questions people ask

Should I throw away the whole plant?
Not necessarily. If you catch it early and remove the infected parts, the plant can often recover and produce fruit.
Can I eat peppers from a plant with spots?
Yes, as long as the fruit itself is healthy and free of lesions. Wash them thoroughly before eating.

Guides to these causes

More problems with Bell Pepper

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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.