Why is my chinese evergreen turning yellow?

The 4 most likely causes

The cause of Chinese evergreen yellow leaves usually narrows to one of the items below, ranked by how often we see each in Growli's diagnostic chats. Work down the list — most readers find their answer in the top two.

1. Overwatering or poor drainage (Most likely)
   In most homes overwatering is more often a drainage problem than a frequency problem. Chinese evergreen needs a pot with a drainage hole, a chunky free-draining mix, and a watering rhythm of when the top 3cm of soil is dry, every 7-10 days. Soggy soil drowns the roots and the first symptom you see above ground is yellowing or wilting foliage.
2. Wrong light level (Likely)
   Chinese evergreen tolerates lower light than most, but tolerating is not thriving. In dim conditions it slows down, drops older leaves, and becomes more vulnerable to overwatering because the soil never dries. Give it low to medium indirect light.
3. Nutrient deficiency (nitrogen or iron) (Possible)
   If Chinese evergreen has not been repotted or fed in a year or more, the older leaves can yellow uniformly while the newest growth stays green — a classic sign of nitrogen depletion. Yellow leaves with green veins on new growth point to iron or manganese deficiency. A balanced liquid feed during the growing season usually resolves both.
4. Underwatering or letting it dry too long (Possible)
   Underwatering looks similar to overwatering at first — both produce limp, dull leaves — but the soil tells the truth. If the soil is dust-dry several centimetres down, water deeply. Chinese evergreen prefers when the top 3cm of soil is dry, every 7-10 days.

Why Chinese evergreen in particular

Aglaonema is a slow understory aroid that naturally spends its oldest lower leaf, letting it yellow evenly - one leaf at a time, low on the cane, is normal ageing, not a fault. What alarms is several lower leaves yellowing together over damp soil: this aroid's roots suffocate in constant wet, and low yellowing is the earliest tell that rot is starting below. A chill below about 15C also yellows and grey-blotches the older leaves within a few days.

Normal turnover, or real trouble?

The reassuring version is orderly: a single bottom leaf fades slowly, keeps its shape, and finally lifts away from the cane with the lightest tug while the crown above stays deep, glossy green. Read the newest, still-furled leaf as your gauge - as long as it emerges full-coloured, one yellow veteran below is only turnover. Worry when the yellowing climbs to mid-height leaves, or when that youngest central spear itself pales.

How to diagnose in 60 seconds

Run these quick checks before you change anything — the right fix depends on what you find.

• Chinese evergreen wants water when the top 3cm of soil is dry, every 7-10 days. Push a finger into the mix and hold it against that: still damp well before it is due, alongside the symptom, is the overwatering signature.
• Are the yellowing leaves the oldest ones at the base, or the newest at the tips? Old-leaf yellowing is usually water or nitrogen; new-leaf yellowing is usually iron or root damage.
• Look at the back of a yellow leaf with strong light — any speckling, webbing, or sticky residue? That points to pests, not water.
• Tip Chinese evergreen out of its pot and look at the roots: firm and pale is healthy; brown, soft or sour-smelling is rot, which is the real cause behind most of these symptoms.

The fix — step by step

Resist feeding - a slow understory aroid handed fertiliser rarely wanted it, and salts only worsen things. Instead lift the pot to judge its weight and let the top third of the chunky mix dry before the next drink, then slide it off any cold windowsill. Remove a fully-yellowed leaf by snapping the petiole cleanly at the cane; a half-cut stub left behind sits wet and invites rot into the stem.

This is the recovery sequence Growli walks users through for Chinese evergreen with yellow leaves. Work through the steps in order; skipping ahead is the most common reason a plant fails to bounce back.

1. Stop watering and check the roots. Don't add more water yet. Unpot Chinese evergreen and look at the rootball — firm white roots mean you have time; brown mushy roots mean you need to act today.
2. Trim damaged roots and yellow leaves. Cut off any soft brown roots with clean scissors. Remove fully yellow leaves at the base — they won't green back up. Leave half-yellow leaves alone for now; the plant is still pulling nutrients out of them.
3. Repot into fresh dry mix. Repot into fresh, well-draining mix in a pot one size up. For Chinese evergreen, pick a spot with low to medium indirect light.
4. Reset the watering rhythm. Water deeply once, then wait. For Chinese evergreen, that means when the top 3cm of soil is dry, every 7-10 days. Use a finger or a moisture meter — never a calendar.
5. Resume feeding only after recovery. A stressed plant cannot use fertiliser and the salts will worsen the damage. Wait for at least one round of healthy new growth (4-6 weeks) before resuming a half-strength liquid feed during the growing season.

When this can't be saved

Most cases of Chinese evergreen yellow leaves are recoverable, but a few red flags point to a plant that has gone past the point of return. If you spot any of these, consider propagating a clean cutting and starting over.

• Every leaf has yellowed simultaneously and the stem feels soft at the base — root rot has likely consumed the plant.
• New leaves emerge yellow and crispy and never green up — the growing tip is damaged.
• The soil smells sour or sulphurous even after a thorough drying period.

Prevention

For Chinese evergreen, the single biggest preventative is matching its native rhythm: when the top 3cm of soil is dry, every 7-10 days, low to medium indirect light, and a free-draining pot with a working drainage hole. Group Chinese evergreen with plants of similar needs so you can water them as a batch rather than guessing per-pot. Set a calendar reminder to feed during the growing season but never feed a sick or freshly-repotted plant — wait for healthy new growth first.

Common questions

Related guides

• What's wrong with my plant? — the diagnosis apps compared
• Is Chinese evergreen toxic to cats and dogs? — toxic to pets, per the ASPCA
• How often to water Chinese evergreen — the watering brief
• When to repot Chinese evergreen — pot size and timing
• Yellow leaves on plants — the full diagnostic guide across species
• What's wrong with my plant? — Growli's flagship diagnosis index
• Chinese evergreen — curling leaves
• Chinese evergreen — drooping
• Chinese evergreen — brown spots
• Monstera — yellow leaves