Why Are My Plant’s Leaves Turning Yellow?
Use where and how the yellowing starts to narrow down the likely cause.
4 min read · Updated July 30, 2026
Check soil moisture and drainage first. Then look at light, pests, temperature, and whether only an old lower leaf is yellowing. The pattern matters more than the color alone.
Check water and roots
Wet soil that stays wet can reduce oxygen around roots. Bone-dry soil can also cause yellowing. Feel below the surface and make sure the pot drains.
Read the pattern
One old lower leaf may be normal. Many soft yellow leaves with wet soil point in a different direction than pale new growth, scorched patches, or fine pest damage.
- Check moisture below the surface.
- Inspect leaf backs and stems.
- Review recent changes in light or temperature.
- Change one likely cause at a time.
Common questions
Should I cut off yellow leaves?
A fully yellow leaf will not turn green again and can usually be removed with clean scissors.
Does yellow always mean overwatering?
No. Underwatering, light, pests, root stress, normal aging, and nutrition can look similar.