Should I prune back leggy stems?

You can trim back the longest, weakest stems to encourage a bushier shape. This is best done in early spring before the main growth spurt.

Will moving it to the sun fix the legginess?

Moving it to better light will prevent new growth from being leggy, but the existing long stems will not shrink back. You may need to prune them to improve the look.

Western columbine: leggy growth, causes and fixes

Check these first

Observe the light intensity in the plant's current spot.
Check if the plant is leaning toward a window or light source.
Measure the distance between leaf nodes to see if they are stretching.

Likely causes

Low light levels
Most likely
How to tell: The stems are long, thin, and leaning heavily toward the nearest light source. The leaves are spaced far apart along the stem.
What to do: Gradually move the plant to a brighter location with more direct morning sun. Do this over a week to avoid shocking the plant with sudden light changes.
Excessive heat
Possible
How to tell: The plant grows rapidly but looks stretched and weak during the peak of summer. This often happens when the plant is stressed by high temperatures.
What to do: Provide afternoon shade to keep the plant cooler during the hottest part of the day. A light layer of mulch around the base can also help keep the roots cool and steady.

Leggy growth in other plants

Find out what's wrong with your western columbine

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 grow tall as it prepares to bloom, but it should not look weak or floppy. You should worry if the stems cannot support their own weight.

Stopping it coming back

Give your columbine plenty of bright, indirect light and keep it in a cool, well ventilated area.

Western columbine: leggy growth? Check yours with a photo

Every plant is a little different. Take a photo of your western columbine 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

Should I prune back leggy stems?: You can trim back the longest, weakest stems to encourage a bushier shape. This is best done in early spring before the main growth spurt.
Will moving it to the sun fix the legginess?: Moving it to better light will prevent new growth from being leggy, but the existing long stems will not shrink back. You may need to prune them to improve the look.

Why is my Western columbine growing so tall and thin?