Pocket BotanistCheck these first
- Measure the amount of light the plant gets daily.
- Check if the plant is leaning toward a light source.
- Review your recent fertilizer use.
Likely causes
Insufficient light
Most likelyHow to tell: The plant looks tall and stretched out with large gaps between leaves. It is not receiving enough energy to produce flower buds.
What to do: Move the plant to a spot that receives at least 6 hours of bright light. If indoors, place it near a sunny window or use a grow light.
Excessive nitrogen
PossibleHow to tell: The plant has lush, dark green foliage but no signs of buds. This happens when the soil is too rich in nitrogen.
What to do: Switch to a balanced fertilizer with a lower nitrogen ratio. Stop fertilizing for a few weeks to let the plant reset.
Find out what's wrong with your siberian rocket
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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
If the plant is mature and has not bloomed by mid summer, it may be too young or lacking light. It is normal for young plants to spend their first year focusing on root and leaf development.
Stopping it coming back
Ensure the plant receives consistent bright light and use a balanced fertilizer during the growing season.
Siberian rocket: not flowering? Check yours with a photo
Every plant is a little different. Take a photo of your siberian rocket 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 Siberian rocket need a cold period to bloom?
- Yes, this plant benefits from a natural cooling period to trigger its flowering cycle. Keeping it in a stable, warm environment year round can sometimes prevent blooming.
- Can I prune it to encourage flowers?
- Light pruning can help, but avoid cutting back the main stems where the flower buds are forming.
More problems with Siberian rocket
- What are these spots on my Siberian rocket?
- Why is my Siberian rocket getting so leggy?
- Why is my Siberian rocket drooping?
- Why is my Siberian rocket suffering from root rot?
- Why are my Siberian rocket leaves turning yellow?
- Why are the tips of my Siberian rocket turning brown?
- Why is my Siberian rocket losing its leaves?
- What are these bugs on my Siberian rocket?
Back to the Siberian rocket 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.