Pocket BotanistCheck these first
- Check the current temperature and sun exposure.
- Look for spent flowers that need deadheading.
- Ensure the soil is not drying out completely.
Likely causes
High temperatures
Most likelyHow to tell: The plant looks healthy but stops producing new buds during midsummer heat.
What to do: Move the plant to a cooler, shaded area. Keep the soil moist to help the plant tolerate the heat.
Low light
PossibleHow to tell: The plant has plenty of leaves but very few or no flower buds.
What to do: Move the container to a brighter spot with more sun exposure. Ensure it gets enough light to fuel flower production.
Find out what's wrong with your edging lobelia
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
It is normal for lobelia to take a break from blooming during the hottest weeks of summer. It should resume when temperatures drop.
Stopping it coming back
Keep the plant well watered and provide afternoon shade to protect it from extreme heat.
Edging lobelia: not flowering? Check yours with a photo
Every plant is a little different. Take a photo of your edging lobelia 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
- Should I deadhead my lobelia?
- While not strictly necessary, shearing the plant back after the first bloom cycle helps it produce more flowers.
- Will my lobelia bloom again in the fall?
- Yes, as temperatures cool down, your lobelia will often start blooming again.
More problems with Edging lobelia
- Why is my edging lobelia drooping?
- Why is my edging lobelia getting leggy?
- Why are my Lobelia erinus leaves turning yellow?
- Why is my Lobelia erinus suffering from root rot?
- Why are my Lobelia erinus leaf tips turning brown?
- Why is my Lobelia erinus dropping leaves?
- What are the bugs on my Lobelia erinus?
Back to the Edging lobelia 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.