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Wych elm · Ulmus glabra

Why is my Wych elm showing signs of root rot?

Root rot is less common for a Wych elm unless it is sitting in waterlogged soil for too long. Check the soil moisture and drainage holes first to see if the roots are drowning.

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

Check these first

  1. Check the soil moisture with your finger.
  2. Inspect the drainage holes for blockages.
  3. Smell the soil for any signs of decay.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The soil stays soggy for days and the leaves may turn yellow or wilt despite the wet ground. You might also notice a sour smell coming from the pot.

    What to do: Stop watering immediately and let the top 3 inches of soil dry out completely. If the plant is in a pot, ensure it has drainage holes and lift it off the saucer so it does not sit in runoff.

  2. Poor Drainage

    Possible

    How to tell: Water pools on the surface for a long time after you pour it. The soil feels dense and heavy like clay.

    What to do: Repot the tree into a container with fresh, well draining potting mix that includes perlite or bark. Avoid using pots without drainage holes to prevent water from collecting at the bottom.

Root rot in other plants

Find out what's wrong with your wych elm

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 leaves are turning black or the bark near the base feels soft and mushy, the rot may be advanced. It is normal for a few older leaves to drop during seasonal changes.

Stopping it coming back

Only water when the top few inches of soil feel dry to the touch. Use a potting mix designed for trees that allows for good airflow around the roots.

Wych elm: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your wych elm 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 save a Wych elm with root rot?
If you catch it early, you can save it by trimming away the mushy, dark roots and repotting in fresh soil. If the entire root system is black and slimy, the tree likely cannot be saved.
How often should I water my Wych elm?
Aim for every 7 to 14 days depending on the heat and humidity. Always check the soil moisture before adding more water.

More problems with Wych elm

Back to the Wych elm 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.