Should I cut off the yellow leaves?

Yes, you can trim off yellow leaves as they will not turn green again. This helps the tree focus its energy on healthy new growth.

Can low light cause yellow leaves?

Yes, if the tree is not getting enough light, it may shed older leaves that turn yellow first. Ensure it is in a full sun location.

Why are my Cannonball tree's leaves turning yellow?

Check these first

Stick your finger two inches into the soil to check for dampness.
Inspect the drainage holes to ensure water is flowing out freely.
Look for signs of pests on the undersides of the yellowing leaves.

Likely causes

Overwatering
Most likely
How to tell: The soil feels constantly wet or muddy, and the lower leaves turn yellow and soft.
What to do: Allow the top few inches of soil to dry out slightly before watering again. Ensure your pot has excellent drainage holes and never let the tree sit in standing water.
Nutrient Deficiency
Possible
How to tell: The leaves turn yellow while the veins remain green, suggesting a lack of iron or other micronutrients.
What to do: Apply a balanced liquid fertilizer diluted to half strength once a month during the growing season. If the soil pH is too high, consider using a fertilizer specifically formulated for acid loving plants.

When to worry

A single yellow leaf at the bottom of the tree is normal as the plant ages. You should worry if many leaves are turning yellow at once or if the yellowing spreads rapidly.

Stopping it coming back

Maintain a consistent watering rhythm every 2 to 4 days and ensure the soil is well draining to prevent root stress.

Not sure which one it is? Photograph your cannonball tree.

This page lists the usual causes. Pocket Botanist looks at your actual leaf 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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Questions people ask

Should I cut off the yellow leaves?: Yes, you can trim off yellow leaves as they will not turn green again. This helps the tree focus its energy on healthy new growth.
Can low light cause yellow leaves?: Yes, if the tree is not getting enough light, it may shed older leaves that turn yellow first. Ensure it is in a full sun location.