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Kauri · Agathis australis

Why are my Kauri leaves turning yellow?

Yellowing leaves on a Kauri often signal that the roots are struggling with moisture levels. Check the soil moisture immediately to see if you are overwatering or underwatering.

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yellow leaves on a plant
Photo: Trio3D, CC BY-SA 4.0

Check these first

  1. Feel the soil depth with your finger.
  2. Inspect the drainage holes for blockages.
  3. Check the base of the stem for mushiness.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The soil feels soggy or swampy to the touch. You might notice a sour smell coming from the pot.

    What to do: Stop watering immediately and let the top 2 inches of soil dry out. Ensure your pot has drainage holes so excess water can escape.

  2. Nutrient deficiency

    Possible

    How to tell: The leaves turn yellow uniformly while the veins remain green. This happens when the plant lacks nitrogen or iron.

    What to do: Apply a balanced, slow release fertilizer during the growing season. Follow the package instructions for a young tree to avoid burning the roots.

Yellow leaves on other plants

Find out what's wrong with your kauri

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

Be concerned if the yellowing spreads rapidly across the whole tree. It is normal for a few older, lower leaves to yellow and drop as the tree grows.

Stopping it coming back

Maintain a consistent watering schedule where the soil stays moist but never sits in standing water.

Kauri: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your kauri 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

Should I cut off the yellow leaves?
Yes, you can snip them off with clean shears to keep the plant looking tidy. This allows the tree to focus its energy on healthy new growth.
Can low light cause yellowing?
Yes, if a Kauri does not get enough bright, indirect light, it may shed leaves that turn yellow first. Move it to a brighter spot gradually.

More problems with Kauri

Back to the Kauri 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.