Why Are My Apple Leaves Turning Yellow?
Yellow leaves on Apple can be alarming, but understanding the cause helps you fix the problem quickly.
Quick Diagnosis
Most Common Cause:
Yellowing leaves in Malus domestica may indicate nutrient deficiencies, such as iron or nitrogen, or may be a symptom of diseases like apple chlorosis or viral infections, affecting overall plant health and productivity.
Common Causes of Yellow Leaves in Apple
1. Overwatering
How to identify:
- Soil is constantly wet or soggy
- Lower leaves yellow first
- Leaves may feel soft or mushy
- Possible musty smell from soil
Solution:
- Allow soil to dry out between waterings
- Check drainage holes aren't blocked
- Consider repotting with fresh, well-draining soil
- Adjust watering to every 7–14 days, depending on soil moisture and climate
2. Underwatering
How to identify:
- Soil is bone dry
- Leaves are crispy or crunchy
- Yellowing starts at tips/edges
- Plant looks wilted
Solution:
- Water thoroughly until water drains from bottom
- Establish regular watering schedule
- Consider using a moisture meter
- Mist leaves to increase humidity
3. Nutrient Deficiency
How to identify:
- Nitrogen deficiency: Lower leaves yellow first
- Iron deficiency: Young leaves yellow with green veins
- Magnesium deficiency: Yellowing between leaf veins
- Overall pale appearance
Solution:
- Apply balanced fertilizer every 4–6 weeks during active growth (spring and summer)
- Use fertilizer appropriate for Apple
- Consider soil testing
- Add compost to improve soil quality
4. Incorrect Lighting
How to identify:
- Too much light: Bleached, pale yellow leaves
- Too little light: Pale yellow with leggy growth
- Uneven yellowing pattern
Solution:
- Apple needs full sun light
- Move to appropriate light location
- Full sun (6–8 hours direct sunlight daily); adjust for intense summer sun with partial afternoon shade.
5. Natural Aging
How to identify:
- Only bottom/oldest leaves yellowing
- New growth looks healthy
- Gradual process
- No other symptoms
Solution:
- This is normal - no action needed
- Remove yellow leaves for aesthetics
- Continue normal care routine
Prevention Tips for Apple
- Proper Watering: Water every 7–14 days, depending on soil moisture and climate
- Right Light: Provide full sun conditions
- Good Drainage: Use well-draining soil and pots with holes
- Regular Feeding: Fertilize every 4–6 weeks during active growth (spring and summer)
- Monitor Regularly: Check leaves weekly for early signs
When Should You Worry?
Seek Help If:
- Multiple leaves yellow rapidly (within days)
- Yellowing accompanied by spots, holes, or pests
- Stems become soft or black
- Foul smell from soil (root rot)
- Plant continues declining despite interventions
Need Help Diagnosing?
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