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Bougainvillea

Why is my bougainvillea growing long and leggy?

A leggy bougainvillea is usually reaching for more light. Check your light levels first, as this plant requires intense sun to stay compact and bushy.

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

Check these first

  1. Assess how many hours of direct sun the plant receives.
  2. Check if the plant is leaning toward a window.
  3. Look for long, unbranched stems that need trimming.

Likely causes

  1. Insufficient Light

    Most likely

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

    What to do: Move the plant to a location with full, direct sun. If you cannot provide enough natural light, supplement with a high intensity grow light for 12 hours a day.

  2. Lack of Pruning

    Most likely

    How to tell: The plant has long, unruly vines that do not branch out. It looks thin despite being tall.

    What to do: Prune back the long stems after the flowering cycle to encourage branching. Cut just above a leaf node to stimulate new growth from that point.

Find out what's wrong with your bougainvillea

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 rarely a sign of disease, but it does mean the plant is not getting what it needs to thrive. It is normal for the plant to grow long vines, but they should be pruned to maintain shape.

Stopping it coming back

Prune your bougainvillea regularly after each bloom and ensure it stays in the sunniest spot possible.

Keep your bougainvillea 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 prune my bougainvillea at any time?
It is best to prune after the flowering cycle ends. This prevents you from cutting off potential blooms.
Will pruning make it bushier?
Yes, pruning forces the plant to send out new shoots from the nodes below the cut. This creates a fuller and more compact appearance.

More problems with Bougainvillea

Back to the Bougainvillea 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.