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Petty spurge · Euphorbia peplus

Why is my Petty Spurge showing signs of root rot?

Root rot in Euphorbia peplus usually happens when the soil stays wet for too long, preventing the roots from breathing. Check the moisture level in the bottom of the pot immediately.

root rot on a plant
Photo: Ninjatacoshell, CC BY-SA 3.0

Check these first

  1. Feel the soil at the base of the stem for mushiness.
  2. Check if the pot has drainage holes at the bottom.
  3. Smell the soil for any signs of decay.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The stems become mushy at the base and the plant loses its upright posture. You might notice a sour smell coming from the soil.

    What to do: Stop watering immediately and let the soil dry out completely. If the rot is advanced, remove the plant from the pot and trim away any black or slimy roots before repotting in fresh, well draining soil.

  2. Poor Drainage

    Most likely

    How to tell: Water sits on the surface of the soil for a long time after you water. The pot lacks holes or the soil is too dense for this succulent.

    What to do: Repot the plant into a container with drainage holes. Use a cactus or succulent mix that contains plenty of perlite or sand to ensure water passes through quickly.

Find out what's wrong with your petty spurge

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 base of the stem is soft and discolored, the rot has likely spread to the main structure and the plant may not recover. It is normal for the plant to look slightly thirsty if you have been underwatering, but mushy stems are a major red flag.

Stopping it coming back

Always wait until the top inch of soil is dry before adding more water. Ensure your potting mix is loose and airy to prevent moisture from trapping around the roots.

Keep your petty spurge healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

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Questions people ask

Can I save a plant with root rot?
Yes, if you catch it early. Trim the dead roots, let the plant dry for a day, and repot in fresh, dry soil.
How often should I water my Petty Spurge?
Water every 3 to 7 days, but only when the top inch of soil is dry. Adjust based on how fast your specific environment dries out.

More problems with Petty spurge

Back to the Petty spurge guide

This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.