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Clematis

Why is my clematis growing so leggy?

It is less common for clematis to be leggy if they get enough light, as they naturally want to climb. Check your light levels first to ensure the vine is getting what it needs.

leggy growth on a plant
Photo: Rosser1954, CC BY-SA 4.0

Check these first

  1. Observe how many hours of direct light the plant gets.
  2. Check if the plant is leaning heavily toward a window.
  3. Look for old, woody stems that have no leaves.

Likely causes

  1. Insufficient Light

    Possible

    How to tell: The stems are long and thin with large gaps between the leaves. The plant is reaching toward the nearest light source.

    What to do: Move your clematis to a spot that receives at least 6 hours of bright light. If it is indoors, place it directly in a sunny window.

  2. Lack of Pruning

    Possible

    How to tell: The plant looks sparse at the bottom and only has growth at the very top. This happens when old stems are not cut back to encourage branching.

    What to do: Prune your clematis back in late winter or early spring to encourage fuller growth. Cut the stems back to a pair of strong buds about 12 inches from the ground.

Find out what's wrong with your clematis

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.

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When to worry

Legginess is mostly a cosmetic issue, but it can make the plant less productive. It is normal for older clematis to lose some lower leaves as they age.

Stopping it coming back

Provide consistent light and prune your vine annually to keep it bushy and full. Support the stems with a trellis so they grow in the right direction.

Keep your clematis healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

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Questions people ask

Can I cut the long stems now?
Yes, you can trim back overly long stems at any time to improve the shape. Just be aware that you might lose some flowers if you prune during the growing season.
Does my clematis need a trellis?
Yes, clematis are climbers and need a structure to hold onto. Without one, they will sprawl and look messy.

More problems with Clematis

Back to the Clematis guide

This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.