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False fox sedge · Carex otrubae

What are these spots on my False fox sedge leaves?

Spots on your sedge are often caused by fungal issues like rust, which thrive in damp, stagnant air. Check the undersides of the leaves for orange or brown powdery patches.

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spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Look for orange or brown dust on the leaves.
  2. Check if the plant is in a crowded area with no airflow.
  3. Inspect the leaves for signs of moisture sitting on them for too long.

Likely causes

  1. Rust Fungus

    Most likely

    How to tell: Small orange or reddish brown spots appear on the leaves.

    What to do: Remove the affected leaves immediately to stop the spread. Improve air circulation by moving the plant to a spot with a gentle breeze.

  2. Overhead Watering

    Possible

    How to tell: Spots appear after you have watered the foliage directly.

    What to do: Water at the base of the plant rather than over the leaves. Keeping the foliage dry helps prevent fungal growth.

Leaf spots on other plants

Find out what's wrong with your false fox sedge

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 spots are manageable, but if the entire plant is covered, it may be too late to save. Act quickly when you see the first signs.

Stopping it coming back

Keep the leaves dry and ensure there is plenty of space between plants for air to move.

False fox sedge: spots? Check yours with a photo

Every plant is a little different. Take a photo of your false fox sedge 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?
You can use a copper based fungicide if the infection is persistent. Always follow the label instructions carefully.
Is this contagious to other plants?
Yes, fungal spores can travel through the air. Isolate the infected plant until it is fully recovered.

Guides to these causes

More problems with False fox sedge

Back to the False fox sedge 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.