Monstera Yellow Leaves: Causes and How to Fix It
Yellowing leaves are the most common Monstera complaint — and overwatering is behind most of them. Here are the likely causes, ranked, with how to tell them apart and fix each one.
Overwatering (the usual culprit)
What's happening
Roots sitting in soggy soil can't get oxygen, begin to suffocate and rot, and stop delivering water and nutrients. The plant sacrifices its oldest, lowest leaves first — they turn uniformly yellow, sometimes with brown mushy spots.
How to confirm
Push a finger into the soil: still wet several days after watering? Lift the pot — heavy and waterlogged? Slip the plant out and check the roots: healthy roots are firm and pale, rotting roots are brown, soft, and smell sour.
How to fix it
Stop watering immediately and let the soil dry. If roots are mushy, trim the rotten ones with clean scissors and repot into fresh, chunky, well-draining mix in a pot with drainage holes. Going forward, only water when the top 2 inches are dry, and never let the pot sit in a full saucer.
Prevent it
Use an airy aroid mix, a pot with drainage, and the finger test before every watering.
Underwatering or very dry soil
What's happening
Left bone-dry too long, the plant can't keep its leaves turgid; older leaves yellow and crisp while the soil pulls away from the pot's edges.
How to confirm
Soil is dry all the way through, the pot feels light, and leaves may droop. Water runs straight down the sides without soaking in — a sign the mix has gone hydrophobic.
How to fix it
Water thoroughly; if the soil is repelling water, bottom-water by setting the pot in a few inches of water for 20–30 minutes until the surface feels moist, then drain.
Prevent it
Check the soil weekly and water when the top 2 inches are dry rather than waiting for drooping.
Natural aging
What's happening
An occasional yellow lower leaf on an otherwise healthy, growing plant is normal — the plant retires old leaves to invest in new growth.
How to confirm
Just one or two of the oldest, lowest leaves are affected, the rest of the plant looks great, and new growth is healthy.
How to fix it
Nothing to fix. Snip the spent leaf off at the base if you like.
Prevent it
No action needed — this is the plant working normally.
Too much direct sun or a nutrient gap
What's happening
Harsh direct sun can bleach leaves toward pale yellow, while a long stretch with no feeding can yellow newer growth and fade overall color.
How to confirm
Sun: yellowing/bleaching on the side facing a bright window, sometimes with crispy patches. Nutrients: generalized pale, slow growth despite good watering, and it hasn't been fed in months.
How to fix it
Move it out of direct sun to bright indirect light. If feeding is overdue, resume a balanced liquid fertilizer at half strength every few weeks in spring and summer.
Prevent it
Keep it in bright indirect light and feed lightly through the growing season.
When to worry (and when not to)
A stray yellow lower leaf now and then is completely normal — don't panic. Worry when multiple leaves yellow at once, when yellowing climbs to newer growth, or when it comes with soft brown spots and damp soil (a sign of root rot that needs action). Caught early, an overwatered Monstera almost always bounces back once the roots can breathe again.