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Key lime · Citrus aurantiifolia

Why is my Key lime tree dropping leaves?

Key lime trees are sensitive to sudden changes in their environment. Check your watering schedule and light levels first, as these are the most common triggers for leaf loss.

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Check these first

  1. Check the soil moisture with your finger.
  2. Inspect the leaves for small insects like aphids.
  3. Verify the plant is getting full sun.

Likely causes

  1. Inconsistent Watering

    Most likely

    How to tell: Leaves often turn yellow or curl before falling off. The soil may be bone dry or constantly soggy.

    What to do: Water deeply when the top inch of soil is dry. Ensure the pot has drainage holes so excess water can escape.

  2. Insufficient Light

    Most likely

    How to tell: The tree looks thin and weak, and leaves drop from the lower branches first. It may stop growing entirely.

    What to do: Move the tree to a spot with at least 8 hours of direct sunlight. If indoors, use a high output grow light.

Leaf drop in other plants

Find out what's wrong with your key lime

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 a few older leaves to drop occasionally. Worry if the tree loses more than 20 percent of its foliage in a week.

Stopping it coming back

Keep the tree in a stable location and maintain a consistent watering routine.

Key lime: leaf drop? Check yours with a photo

Every plant is a little different. Take a photo of your key lime 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 moving my tree cause leaf drop?
Yes, Key limes dislike change. Moving them from outdoors to indoors often triggers a temporary leaf drop as they adjust.
Will my tree grow new leaves?
Yes, once the environmental stress is corrected, the tree will push out new growth. Be patient and keep it in good light.

More problems with Key lime

Back to the Key lime 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.