Pocket Botanist
Check these first
- Feel the soil depth to see if it is saturated.
- Inspect the drainage holes or site slope.
- Check for a musty odor near the roots.
Likely causes
Poor drainage
Most likelyHow to tell: The soil feels heavy and wet for days after watering, and the foliage may turn yellow or wilt despite the moisture.
What to do: Improve the soil structure by mixing in organic compost to help water move away from the roots. If the plant is in a pot, ensure it has large drainage holes and use a well draining potting mix.
Overwatering
PossibleHow to tell: The plant looks sad and the soil remains damp well past the 14 day mark. You might notice a musty smell coming from the soil surface.
What to do: Adjust your schedule to water only when the top inch of soil is dry. Stop watering entirely for two weeks to let the root zone recover.
Find out what's wrong with your boxwood
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 stems feel mushy or the leaves turn black and drop rapidly, the rot has likely reached the crown and the plant may not recover.
Stopping it coming back
Always plant boxwoods in soil that drains quickly and avoid letting them sit in standing water.
Keep your boxwood 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 boxwood with root rot?
- If you catch it early, you can improve drainage and reduce watering to help it bounce back. If the roots are black and slimy, the damage is usually permanent.
- Does mulch cause root rot?
- Mulch is fine, but do not pile it against the trunk. Keep it a few inches away to allow the base to breathe.
More problems with Boxwood
- Why are my Common Boxwood leaves turning yellow?
- How do I know if my Common Boxwood has pests?
- Why is my boxwood losing its leaves?
- What are these spots on my boxwood leaves?
- Why do my Common Boxwood leaves have brown tips?
- Why is my boxwood drooping?
- Why is my boxwood growing leggy and sparse?
- Why are my boxwood leaves curling?
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.