Why are my Peace Lily leaves turning yellow?

Your Peace Lily leaves are turning yellow most often from overwatering. Soggy soil starves the roots of oxygen and they begin to rot, showing first as soft, yellowing leaves. Natural aging of the oldest lower leaves is the next most likely cause, with underwatering, too much direct sun, or tired old soil also possible. Check the soil moisture first, then ease off watering.

Most likely cause

Overwatering is the top cause of yellow Peace Lily leaves. These plants like steady, light moisture but cannot sit in saturated soil; roots deprived of air begin to rot and can no longer feed the leaves, which fade to yellow, often starting with the lower foliage.

You can confirm it by the pattern. Overwatering yellows leaves that feel soft rather than crispy, the soil stays wet for days, and the pot feels heavy. If there is no drainage or the plant sits in a full saucer, this is almost certainly the driver, and you may also see drooping. Let the soil dry to the top inch, improve drainage, and the yellowing should stop spreading.

Other causes

These rank below overwatering but often overlap with it.

Natural aging. A single old lower leaf yellowing slowly is normal; only the bottommost leaf is affected while the rest of the plant looks healthy.
Underwatering. Prolonged dry soil stresses the roots; the soil is bone dry and light, and yellowing often comes with wilting and crispy edges.
Too much direct sun. Harsh light bleaches the foliage; look for pale yellow patches on the leaves facing the window.
Nutrient deficiency. Old, spent soil runs short on feed; the whole plant pales to an even yellow across many leaves at once.

How to fix it

Check the soil. Feel the top inch. If it is wet, hold off watering until it dries out, and lift the pot to gauge how heavy it is.
Improve drainage. Make sure the pot drains freely and empty any saucer so the roots never sit in standing water.
Water consistently. Water only when the top inch is dry, then let the pot drain fully, using room-temperature filtered water.
Remove spent leaves. Cut fully yellow leaves at the base with clean scissors to tidy the plant and redirect energy to healthy growth.
Adjust the light. Move the plant to bright indirect light, out of direct sun that can bleach the leaves.
Refresh feeding. During the growing season, feed at quarter to half strength every 6 to 8 weeks, or repot if the soil is old and spent.

Cause	Tell-tale sign	Fix
Overwatering	Soft yellow leaves, wet soil	Let top inch dry, improve drainage
Natural aging	Single oldest leaf only	Trim it, no action needed
Underwatering	Bone-dry soil, wilting	Water thoroughly, keep evenly moist
Direct sun	Pale patches facing window	Move to bright indirect light
Nutrient deficiency	Even pale yellowing overall	Feed lightly or refresh soil

Frequently asked questions

Do yellow Peace Lily leaves turn green again?

No. Once a leaf yellows the chlorophyll is gone and it will not recover its color. Fix the underlying cause, then cut the fully yellow leaf off at the base so the plant stops spending energy on it and channels growth into healthy foliage.

Is it normal for Peace Lily leaves to turn yellow?

Yes, in moderation. The occasional oldest lower leaf yellows and dies off as the plant grows, which is normal aging. But several leaves yellowing at once, or new leaves turning yellow, points to a watering or light problem that needs attention.

Does overwatering turn Peace Lily leaves yellow?

Yes, and it is the most common cause. Soggy soil starves the roots of oxygen and they begin to rot, which shows up as soft, yellowing leaves and sometimes drooping. Let the top inch dry before watering again and make sure the pot drains freely.

Should I cut yellow leaves off my Peace Lily?

Yes, once a leaf is mostly or fully yellow. Cut it off at the base of the stem with clean scissors. Removing it tidies the plant and redirects energy to healthy growth, but always fix the underlying cause first or new leaves will keep yellowing.

Why are my Peace Lily leaves yellow but the soil is dry?

Dry soil with yellowing usually means underwatering or roots so dry they can no longer take up water. Water thoroughly until it drains, or soak the pot if the soil pulled away, then keep the soil lightly moist. Check that the roots are still firm and pale.

How do I stop my Peace Lily leaves from turning yellow?

Water only when the top inch of soil is dry, make sure the pot drains and never sits in water, and keep it in bright indirect light. Refresh old soil or feed lightly in the growing season. Consistent moisture prevents most yellowing.