Pocket Botanist
Check these first
- Check the soil moisture at least 2 inches deep.
- Smell the soil for any signs of decay.
- Inspect the drainage holes for blockages.
Likely causes
Overwatering
Most likelyHow to tell: The base of the stem feels mushy and the soil smells sour or swampy.
What to do: Stop watering immediately and let the soil dry out completely. If the plant is in a container, check for drainage holes and repot into fresh, well draining soil if the roots are black.
Poor drainage
PossibleHow to tell: Water pools on the surface for a long time after watering.
What to do: Mix perlite or coarse sand into your potting mix to improve aeration. Ensure your pot has adequate drainage holes at the bottom.
Find out what's wrong with your western mugwort
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 are turning black and mushy near the soil line, the plant may be beyond saving.
Stopping it coming back
Always wait until the soil is completely dry before watering again, typically every 7 to 14 days.
Western mugwort: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your western mugwort 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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Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Can I save a plant with root rot?
- Yes, if you catch it early. Trim away the black, mushy roots and repot the plant in dry, fresh soil.
- How often should I water my Western mugwort?
- Water every 7 to 14 days, but only when the soil is completely dry to the touch.
More problems with Western mugwort
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- Why is my Artemisia ludoviciana drooping?
- Why is my Artemisia ludoviciana dropping its leaves?
- Are there bugs on my Western mugwort?
- Why are the leaves on my Artemisia curling?
Back to the Western mugwort 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.