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Red Maple · Acer rubrum

Why are my Red Maple leaves turning yellow?

Yellowing leaves on a Red Maple often signal an issue with soil nutrients or water balance. Check the soil moisture first to see if you are overdoing it or letting the tree get too dry.

Not sure it's this? Check a photo of your plant for free

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

Check these first

  1. Check the soil moisture level with your finger.
  2. Look at the leaf veins to see if they are still green.
  3. Check the soil pH if you have had the tree for a long time.

Likely causes

  1. Iron Chlorosis

    Most likely

    How to tell: The leaves turn yellow while the veins remain green. This happens when the tree cannot absorb enough iron from the soil.

    What to do: Test your soil pH, as high alkalinity often locks up iron. Apply a chelated iron supplement to the soil to help the tree recover.

  2. Overwatering

    Possible

    How to tell: The leaves turn a dull yellow and the soil feels soggy to the touch. The roots may begin to rot if the water has nowhere to go.

    What to do: Stop watering immediately and let the top few inches of soil dry out. Ensure the planting site has proper drainage so water does not pool.

Yellow leaves on other plants

Find out what's wrong with your red maple

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 some older leaves to yellow and drop in late summer. Worry if the yellowing is widespread or happens on new growth.

Stopping it coming back

Maintain a consistent watering schedule and keep the soil pH slightly acidic to prevent nutrient lockout.

Red Maple: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your red maple 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

Is my tree dying if the leaves are yellow?
Not necessarily, but it is a sign of stress. Identify the cause quickly to help the tree bounce back.
How often should I water my Red Maple?
Aim for every 7 to 14 days depending on the weather. Always check that the soil is moist but never waterlogged.

Guides to these causes

More problems with Red Maple

Back to the Red Maple 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.