Why is my monstera turning yellow?

The 4 most likely causes

The cause of monstera 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. Monstera needs a pot with a drainage hole, a chunky free-draining mix, and a watering rhythm of when the top 2-3cm of soil is dry, roughly weekly. Soggy soil drowns the roots and the first symptom you see above ground is yellowing or wilting foliage.
2. Wrong light level (Likely)
   Monstera is a high-light plant and quickly turns leggy, pale, or stalled in low light. Move it within a metre of a south or east-facing window, or supplement with a grow light. It wants bright indirect light.
3. Nutrient deficiency (nitrogen or iron) (Possible)
   If monstera 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. Monstera prefers when the top 2-3cm of soil is dry, roughly weekly.

Why monstera in particular

On a mature Monstera the single lowest, oldest leaf yellowing evenly and slowly is ordinary senescence — this aroid pulls its mobile nitrogen back before shedding a leaf it has outgrown as it climbs, leaving the carotenoid yellow behind. What should worry you is several leaves yellowing at once, yellowing that starts on new growth near the top, or yellow blotches that have gone soft and dark. That pattern points to roots sitting wet, not to age.

Normal turnover, or real trouble?

Watch which leaf yellows. When it is the one sitting directly below a freshly unfurling leaf, this climber is simply banking the old blade's nutrients into the new spear — a routine trade as it ascends. Also routine: a cataphyll, the papery sheath that wrapped an emerging leaf, yellowing then browning once empty. Alarming is yellow creeping between still-green veins on upper, younger leaves, which is not age.

How to diagnose in 60 seconds

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

• Monstera wants water when the top 2-3cm of soil is dry, roughly weekly. 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 monstera 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

First, resist trimming a single yellowing lower leaf — let the Monstera finish drawing nutrients back until the petiole loosens, then cut it flush at the stem with a clean blade. If several yellow together, tip the plant out and check the roots: the cure is repotting into a chunky bark-and-perlite aroid mix that drains fast, not a dose of fertiliser, which only scorches stressed roots.

This is the recovery sequence Growli walks users through for monstera 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 monstera 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 monstera, pick a spot with bright indirect light.
4. Reset the watering rhythm. Water deeply once, then wait. For monstera, that means when the top 2-3cm of soil is dry, roughly weekly. 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 monstera 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 monstera, the single biggest preventative is matching its native rhythm: when the top 2-3cm of soil is dry, roughly weekly, bright indirect light, and a free-draining pot with a working drainage hole. Group monstera 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
• Monstera care guide — full watering, light, and feeding routine
• Is monstera toxic to cats and dogs? — toxic to pets, per the ASPCA
• How often to water monstera — the watering brief
• When to repot monstera — 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
• Monstera — curling leaves
• Monstera — drooping
• Monstera — brown spots
• Snake plant — yellow leaves