Pocket Botanist
Check these first
- Inspect the soil surface for persistent dampness.
- Check the bottom of the pot for clogged drainage holes.
- Gently pull the plant to see if the roots are firm or mushy.
Likely causes
Overwatering
Most likelyHow to tell: The leaves will look wilted even if the soil is wet, and the stems might feel soft or mushy near the base.
What to do: Stop watering immediately and let the top 2 inches of soil dry out. If the plant is in a pot, ensure it has drainage holes and remove any standing water from the saucer.
Poor Soil Drainage
PossibleHow to tell: The soil stays wet for more than 7 days after watering and develops a sour or swampy smell.
What to do: Repot your mustard into a fresh mix that includes perlite or sand to improve airflow. Avoid using heavy garden soil that holds too much moisture.
Find out what's wrong with your white mustard
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 turns brown and slimy, the plant is likely beyond saving. It is normal for older lower leaves to fade as the plant matures.
Stopping it coming back
Always check the soil moisture with your finger before adding more water. Ensure your pot has adequate drainage to keep roots healthy.
Keep your white mustard 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.
Questions people ask
- Can I save a plant with root rot?
- If you catch it early, you can trim away the black, mushy roots and repot the plant in fresh soil. If the stem is already mushy, it is usually too late.
- How often should I water my white mustard?
- Aim to water every 3 to 7 days depending on the heat. Keep the soil evenly moist but never let it sit in standing water.
More problems with White Mustard
- Why are there tiny holes in my white mustard leaves?
- What are these yellow patches on my white mustard leaves?
- Why is my white mustard growing so tall and thin?
- Why are my white mustard leaves turning yellow?
- Why is my white mustard drooping?
- Why is my white mustard losing its leaves?
- Why are my white mustard leaves curling?
Back to the White Mustard 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.