Check these first
- Check if the plant is in its first or second year of growth.
- Observe how many hours of direct sunlight the plant receives daily.
- Ensure the plant is not crowded by other taller plants.
Likely causes
Insufficient sunlight
Most likelyHow to tell: The plant looks stretched out and pale rather than compact and dark green.
What to do: Move the plant to a spot that gets at least 6 to 8 hours of direct sun daily. Viper's bugloss will not bloom well in partial shade.
Young age
Most likelyHow to tell: The plant is healthy but has not yet formed a tall flower spike.
What to do: Be patient and wait for the second year. The plant spends its first year building a strong root system and leaf base.
Find out what's wrong with your viper's bugloss
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
Worry only if your plant is in its second year and still shows no signs of a flower stalk by midsummer.
Stopping it coming back
Plant in a location with full, unobstructed sun to encourage healthy development.
Viper's bugloss: not flowering? Check yours with a photo
Every plant is a little different. Take a photo of your viper's bugloss 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
- Will my Viper's bugloss bloom in its first year?
- Usually no. It is a biennial, meaning it grows leaves the first year and flowers the second.
- Does fertilizer help it bloom?
- Not really. This plant prefers poor, rocky soil and too much fertilizer can actually stop it from flowering.
More problems with Viper's bugloss
- Why are there white spots on my Viper's bugloss?
- Why is my Viper's bugloss showing signs of root rot?
- Why is my Viper's bugloss growing so leggy?
- Why are my Viper's bugloss leaves turning yellow?
- Why is my Viper's bugloss drooping?
- Why are there bugs on my Viper's bugloss?
- Why are my Viper's bugloss leaves curling?
Back to the Viper's bugloss 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.
