Can I prune back leggy stems?

Yes, you can trim back the stems to encourage bushier growth. Just be sure to provide more light afterward so the new growth stays compact.

Will my plant recover if I move it to the sun?

The existing stems will not shrink, but the new growth will be much stronger and tighter. You can prune the old, leggy stems once the new growth is established.

Why is my Viper's bugloss growing so leggy? Causes and fixes

Check these first

Observe the plant's current light exposure throughout the day.
Check for any nearby objects casting shade on the plant.
Assess if the stems are leaning heavily toward a window.

Likely causes

Insufficient Light
Most likely
How to tell: The stems look thin and reach toward the nearest light source while the foliage appears sparse.
What to do: Move your plant to a spot that receives at least 6 to 8 hours of direct sunlight daily. If you are growing it indoors, you may need to supplement with a strong grow light.
Excessive Nitrogen
Possible
How to tell: The plant grows very fast with soft, weak stems that cannot support their own weight.
What to do: Stop using high nitrogen fertilizers immediately. Switch to a balanced, low strength fertilizer once in early spring to encourage steady growth.

Leggy growth in other plants

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.

When to worry

It is normal for the plant to stretch slightly as it matures, but if it flops over, it is time to move it to a brighter spot.

Stopping it coming back

Ensure the plant receives full, unobstructed sun from the moment it starts growing in spring.

Viper's bugloss: leggy growth? 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.

Get the app · Or check it from a photo now, free

Questions people ask

Can I prune back leggy stems?: Yes, you can trim back the stems to encourage bushier growth. Just be sure to provide more light afterward so the new growth stays compact.
Will my plant recover if I move it to the sun?: The existing stems will not shrink, but the new growth will be much stronger and tighter. You can prune the old, leggy stems once the new growth is established.

Why is my Viper's bugloss growing so leggy?