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Sacred Lotus · Nelumbo nucifera

Why are there brown spots on my sacred lotus leaves?

Brown or black spots on your lotus foliage are often caused by a fungal infection known as lotus spot. Check your plant's air circulation and leaf health to identify the cause.

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spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Remove any leaves with significant spotting.
  2. Ensure the plant is not crowded by other pond plants.
  3. Check if the spots are spreading to new growth.

Likely causes

  1. Lotus spot fungus

    Most likely

    How to tell: Small brown or black circular spots appear on the leaves and may grow larger over time. The tissue around the spots might look thin or papery.

    What to do: Remove and discard any heavily infected leaves immediately to prevent the spread. Ensure the plant has plenty of space and is not crowded by other vegetation.

  2. Sunburn or heat stress

    Possible

    How to tell: Brown patches appear on the leaves that are most exposed to intense, direct afternoon sun. The edges of these spots may feel dry and crispy.

    What to do: While lotus love sun, extreme heat waves can stress them. Provide a bit of afternoon shade if temperatures consistently exceed 100 degrees Fahrenheit.

Leaf spots on other plants

Find out what's wrong with your sacred lotus

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

Small, isolated spots are common in outdoor ponds. Worry if the spots are spreading rapidly and causing the entire leaf to collapse.

Stopping it coming back

Keep the water clean and remove decaying plant matter from the pond surface regularly.

Sacred Lotus: spots? Check yours with a photo

Every plant is a little different. Take a photo of your sacred lotus 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 use a fungicide on my lotus?
Avoid chemical fungicides if you have fish or frogs in your pond. Physical removal of infected leaves is the safest and most effective method.
Does lotus spot kill the plant?
It rarely kills the plant, but it can weaken it significantly. Keeping the plant healthy with proper light and nutrients helps it resist the infection.

More problems with Sacred Lotus

Back to the Sacred Lotus 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.