Should I prune the long stems?

You can trim back long, leggy stems to encourage bushier growth, but only do this after you have moved the plant to a brighter spot.

Does American vetch need a trellis?

Yes, as a vetch, it is a climber and will look much better and grow stronger if given a small trellis or support to hold onto.

Why is my American vetch looking leggy? Causes and fixes

Check these first

Assess if the plant is receiving at least 6 hours of light.
Look for nearby plants that might be shading your vetch.
Rotate the pot if it is leaning in one direction.

Likely causes

Low light
Most likely
How to tell: The stems are long and thin with large gaps between the leaves. The plant leans heavily toward the light source.
What to do: Move the plant to a brighter location with more direct sun. If it is indoors, place it right next to a south or west facing window.
Overcrowding
Possible
How to tell: The stems are thin and weak because they are competing with nearby plants for light and space. The foliage looks sparse and stretched.
What to do: Thin out surrounding plants to give your vetch more room to spread. This ensures it gets adequate light on all sides.

Leggy growth in other plants

Find out what's wrong with your american vetch

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

If the stems are so thin they cannot support themselves, the plant is severely light-deprived. It is normal for the plant to have some natural vining behavior, but it should still look full and healthy.

Stopping it coming back

Provide consistent bright light and ensure the plant has enough space to grow without competing for resources.

American vetch: leggy growth? Check yours with a photo

Every plant is a little different. Take a photo of your american vetch 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 the long stems?: You can trim back long, leggy stems to encourage bushier growth, but only do this after you have moved the plant to a brighter spot.
Does American vetch need a trellis?: Yes, as a vetch, it is a climber and will look much better and grow stronger if given a small trellis or support to hold onto.

Why is my American vetch looking leggy?