Pocket BotanistCheck these first
- Observe how many hours of direct sun the plant gets daily.
- Check if the plant is still in a juvenile growth stage.
- Ensure the soil is not drying out completely between waterings.
Likely causes
Insufficient light
Most likelyHow to tell: The plant looks stretched out or leggy with large gaps between the leaves. It fails to produce flower buds even during the peak of summer.
What to do: Move your plant to a spot where it receives at least 6 hours of direct or bright indirect sunlight. If it is in deep shade, it will focus on foliage growth rather than flowers.
Young age
PossibleHow to tell: The plant looks healthy and lush but is quite small. It has not yet reached the maturity needed to put energy into reproduction.
What to do: Be patient and keep the soil consistently moist. It will likely bloom once it has established a stronger root system and grown larger.
Find out what's wrong with your broad-leaved 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 mature and getting full sun but still refuses to flower by late summer, it may be lacking necessary soil nutrients.
Stopping it coming back
Provide consistent moisture and plenty of sunlight throughout the spring and early summer.
Broad-leaved willowherb: not flowering? Check yours with a photo
Every plant is a little different. Take a photo of your broad-leaved 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 this plant need fertilizer to bloom?
- Usually not, as it is quite vigorous on its own. If your soil is very poor, a light application of balanced liquid fertilizer in spring can help.
- Will it bloom indoors?
- It is difficult to get this plant to bloom indoors because it requires high light levels and specific seasonal temperature changes. It is much happier outdoors.
More problems with Broad-leaved willowherb
- Why are there orange spots on my Broad-leaved willowherb?
- Why is my Broad-leaved willowherb drooping?
- Why is my Broad-leaved willowherb growing so leggy?
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- Why is my Epilobium montanum dropping leaves?
- What are these bugs on my Epilobium montanum?
- Is my Epilobium montanum suffering from root rot?
Back to the Broad-leaved 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.