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African Violet · Streptocarpus ionanthus

Why are there spots on my African Violet leaves?

Spots on African Violet leaves are often caused by water droplets or fungal issues like powdery mildew. Check the leaves for a white, dusty coating first.

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spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Examine the leaves for a white, fuzzy coating.
  2. Check if you have been splashing water on the leaves.
  3. Ensure the plant has enough space for air to move.

Likely causes

  1. Powdery mildew

    Most likely

    How to tell: You see a white, powdery substance on the leaves or stems. It often happens when air circulation is poor.

    What to do: Improve air flow around the plant by spacing it away from others. You can gently wipe the leaves with a damp cloth or use a mild fungicide.

  2. Water spotting

    Possible

    How to tell: Small, light colored rings or spots appear on the leaves. This happens when cold water splashes onto the foliage.

    What to do: Water carefully at the soil line using a narrow spout. If you get water on the leaves, gently blot it off with a paper towel.

Leaf spots on other plants

Find out what's wrong with your african violet

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

Powdery mildew can spread quickly to other plants, so treat it as soon as you see it. Small water spots are mostly cosmetic and not a threat to the plant's life.

Stopping it coming back

Keep the leaves dry and ensure your plant has good air circulation. Never crowd your African Violets too close together.

African Violet: spots? Check yours with a photo

Every plant is a little different. Take a photo of your african violet 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

Can I wash the leaves?
You can, but you must be very careful. Use a soft, dry brush to remove dust instead of water whenever possible.
Is powdery mildew dangerous?
It is not immediately fatal, but it weakens the plant and stops it from blooming. Treat it early to keep your plant healthy.

Guides to these causes

More problems with African Violet

Back to the African Violet 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.