Pocket BotanistCheck these first
- Check if the plant is receiving enough direct or bright light.
- Touch the soil to ensure it is consistently damp.
Likely causes
Insufficient light
Most likelyHow to tell: The plant looks stretched or leggy and fails to produce flower buds.
What to do: Move your plant to a spot with full sun or very bright indirect light. Ensure it receives at least 6 hours of bright light daily.
Dry soil conditions
PossibleHow to tell: The plant looks wilted and the soil surface feels dry to the touch.
What to do: Keep the soil constantly moist by watering every 1 to 3 days. Never let the soil dry out completely as this plant thrives in wet conditions.
Find out what's wrong with your marsh willowherb
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 plant is healthy and green but simply not blooming, it may just be too young or the season is wrong. It is normal for this plant to only bloom during its active growing season.
Stopping it coming back
Maintain a steady, wet soil environment and provide ample sunlight throughout the spring and summer.
Marsh willowherb: not flowering? Check yours with a photo
Every plant is a little different. Take a photo of your marsh willowherb 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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Does marsh willowherb flower indoors?
- It is very difficult to get this plant to flower indoors because it requires high humidity and intense light. It is much happier in an outdoor bog garden or a very wet container.
- When should I expect flowers?
- You will typically see flowers from mid summer to early autumn. If you do not see them by late summer, your light levels are likely too low.
More problems with Marsh willowherb
- Why does my Marsh willowherb have orange spots?
- Why is my Marsh willowherb drooping?
- Why is my Marsh willowherb growing so leggy?
- Why are my Marsh willowherb leaves turning yellow?
- Why are my Marsh willowherb's leaf tips turning brown?
- Why is my Marsh willowherb dropping leaves?
- Why does my marsh willowherb have pests?
- Why are my marsh willowherb leaves curling?
Back to the Marsh willowherb 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.