Monstera Leaves Turning Yellow? What to Check First

Yellow leaves are a clue, not a diagnosis. Before watering, feeding or repotting your Monstera, check whether the pot is wet or dry and which leaves have changed.

Take a photograph and note the last watering, any recent move and whether you have changed the pot or fertiliser. Work through the checks below using what you find.

Start with the pot

Feel below the surface of the mix and compare the pot's weight with how it feels after watering. Look inside the decorative outer pot for trapped water.

• Persistently wet mix: empty standing water and let the mix dry appropriately before watering again. Check that drainage holes are open.
• Dry mix and a light pot: water slowly and thoroughly, then drain. If water runs down the sides without wetting the root ball, bottom watering can help rewet it; remove the pot once the mix has absorbed moisture and drain it fully.
• Unclear moisture: investigate further before adding water. A wilted plant can have either thirsty roots or damaged roots that cannot take up water.

Misting the leaves does not rehydrate a dry root ball. Avoid leaving bare roots out on newspaper to dry.

Check roots when the evidence points there

If the mix stays wet and the plant is declining, gently slide out the root ball. Soft, decaying roots are concerning; colour alone is not a reliable reason to cut a root away.

Trim clearly rotten tissue with clean tools and repot the remaining healthy roots in fresh, well-draining mix. Choose a container to fit the remaining roots rather than automatically sizing up. If the stem base is soft or damage is extensive, get advice from a local horticultural service or experienced nursery; recovery is uncertain.

Look at light and recent changes

Pale, scorched patches on the exposed side may follow a sudden move into strong sunlight. Filter the light or move out of the harsh beam. Already damaged patches will not repair themselves.

Also consider the opposite: a plant moved into a dim room may use water more slowly. Keep it in bright indirect light and reassess the pot before watering. Protect it from cold draughts and direct heat.

A recent move is useful context, but do not assume every change is harmless adjustment if the plant keeps declining.

Inspect for pests

Check leaf undersides and stem joints. Fine stippling or webbing can suggest spider mites; cottony clusters can suggest mealybugs. These are reasons to inspect closely, not to identify a pest from yellow colour alone.

Separate a plant with suspected pests from nearby plants while you identify them. Choose a treatment labelled for that pest and indoor use, and follow its instructions. Avoid applying several sprays in the hope that one will work.

Review feeding without guessing a deficiency

Yellowing between green veins can have several causes, including nutrient availability and root problems. It does not automatically mean the plant needs iron or magnesium.

Check the product, dose and last application. Excess fertiliser can also injure roots. Do not add a strong feed to a stressed plant as a rescue treatment. If it is growing in depleted mix and has not been fed, resume an appropriate houseplant feed only after checking the roots, watering and light.

Decide what to watch next

An occasional older, lower leaf can yellow as part of normal ageing. If the rest of the plant is healthy, observe before making major changes. Rapid spread, soft stems or affected new growth deserve a closer check.

Record your finding and the action you took. Watch whether further leaves deteriorate and whether later growth looks healthy. Removing a yellow leaf may tidy the plant, but it does not address the cause.

For the ongoing routine, use our Monstera care guide. Keep reminders tied to checking the pot, not to an automatic watering schedule.