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Mexican bush sage · Salvia leucantha

Why is my Mexican bush sage growing so tall and thin?

Mexican bush sage naturally grows tall, but it should not look sparse or weak. This usually happens when the plant is not getting enough direct sunlight.

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

Check these first

  1. Count the hours of direct sun the plant gets.
  2. Check if nearby trees or buildings are casting shade.
  3. Look for new growth nodes along the stems.

Likely causes

  1. Insufficient Light

    Most likely

    How to tell: The stems are stretching toward the light source and have large gaps between the leaves.

    What to do: Move the plant to a location that receives full sun for at least 6 to 8 hours a day. If it is in a pot, rotate it weekly to ensure even growth.

  2. Lack of Pruning

    Possible

    How to tell: The plant is very tall but has no new growth near the bottom.

    What to do: Prune the stems back by one third after the first flush of flowers to encourage bushier growth. This keeps the plant compact and full.

Leggy growth in other plants

Find out what's wrong with your mexican bush sage

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

It is normal for the plant to get tall, but if it is flopping over or looks sickly, it needs more light or a trim.

Stopping it coming back

Give your sage plenty of direct sun and prune it back once a year to maintain a dense shape.

Mexican bush sage: leggy growth? Check yours with a photo

Every plant is a little different. Take a photo of your mexican bush sage 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

Can I prune it anytime?
It is best to prune after the main flowering season. Pruning too early in the season will remove the flower buds.
Does it need fertilizer?
Mexican bush sage does not need much fertilizer. Too much nitrogen can actually cause the plant to become leggy and produce fewer flowers.

More problems with Mexican bush sage

Back to the Mexican bush sage 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.