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Common agrimony · Agrimonia eupatoria

Why is my Agrimonia eupatoria growing so tall and thin?

Leggy growth happens when your agrimony is stretching to find more light. Check the light levels in your plant's current spot first.

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

Check these first

  1. Assess how many hours of direct or bright light the plant receives.
  2. Observe if the plant is leaning toward a window.
  3. Check for large gaps between the leaf nodes on the stem.

Likely causes

  1. Insufficient Light

    Most likely

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

    What to do: Move the plant to a brighter location with full sun or bright indirect light. Rotate the pot every few days to encourage even growth.

  2. Lack of Pruning

    Possible

    How to tell: The plant is tall and sparse with few side branches. It looks top heavy and starts to flop over.

    What to do: Pinch back the growing tips of the stems to encourage bushier growth. Do this in the spring to keep the plant compact and sturdy.

Leggy growth in other plants

Find out what's wrong with your common agrimony

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 fatal but makes the plant look untidy and weak. It is normal for the plant to grow tall as it matures, but it should not look thin or sparse.

Stopping it coming back

Provide plenty of bright light and pinch back stems in the spring. This keeps the plant full and prevents it from stretching out.

Common agrimony: leggy growth? Check yours with a photo

Every plant is a little different. Take a photo of your common agrimony 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.

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Questions people ask

Will my plant grow back if I cut it?
Yes, pruning actually helps the plant grow back fuller and stronger. It will produce new side shoots from the nodes below the cut.
How much light does agrimony need?
It thrives in full sun to partial shade. If it is indoors, place it in a bright window where it gets several hours of light.

More problems with Common agrimony

Back to the Common agrimony guide

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