Pocket Botanist
Check these first
- Measure the hours of direct sun the plant receives.
- Check for shadows cast by nearby trees or buildings.
- Look for signs of new growth at the base of the stems.
Likely causes
Insufficient light
Most likelyHow to tell: The stems are long with large gaps between the leaves. The plant will lean heavily toward the nearest light source.
What to do: Move the plant to a location that receives at least 6 to 8 hours of direct sun daily. If it is in a pot, rotate it every few days to encourage even growth.
Lack of pruning
PossibleHow to tell: The plant is tall but not necessarily leaning. It simply looks sparse and overgrown.
What to do: Trim back the stems by one third to encourage branching. Do this in early spring to promote a bushier shape for the rest of the season.
Find out what's wrong with your white horehound
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
Legginess is rarely fatal but it makes the plant look untidy and weak. It is normal for the plant to stretch slightly as it prepares to flower.
Stopping it coming back
Provide maximum sun exposure and prune the plant back annually. This keeps the stems strong and the foliage dense.
White horehound: leggy growth? Check yours with a photo
Every plant is a little different. Take a photo of your white horehound 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
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Questions people ask
- Can I fix a leggy plant?
- You can prune it to encourage new growth, but the existing long stems will not shrink. The new growth will be more compact if the light is sufficient.
- How often should I prune it?
- Once a year in early spring is usually enough. You can also pinch back the tips of the stems during the growing season to keep it bushy.
More problems with White horehound
- Why are there tiny bugs on my White horehound?
- Why does my White horehound have white spots on its leaves?
- Why is my white horehound suffering from root rot?
- Why are my white horehound leaves turning yellow?
- Why is my white horehound drooping?
- Why is my white horehound not flowering?
- Why are my white horehound leaves curling?
Back to the White horehound 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.