Short answer
Yellowing leaves on a Monstera deliciosa are most commonly caused by overwatering or poor soil drainage, which leads to root suffocation. The most effective fix is to ensure the plant is in a pot with drainage holes and to allow the top two inches of soil to dry out completely before watering again.
Seeing yellowing on your Monstera deliciosa can be alarming, but it is a very common signal that the plant's root environment is compromised. While occasionally a natural part of an older leaf's life cycle, widespread yellowing usually indicates that the roots are struggling to breathe in saturated soil or are reacting to improper light and nutrient conditions.
Monstera deliciosa roots require oxygen; when the soil stays consistently wet, the roots begin to drown and decay. This prevents the plant from taking up nutrients, causing the foliage to turn yellow as a stress response.
Check: Check the drainage holes and push your finger two inches into the soil; if it feels soggy or swampy, the plant is waterlogged.
Fix: Allow the top two inches of soil to dry out fully before the next watering, and ensure the pot has adequate drainage holes.
As a tropical climber, the Monstera requires bright, indirect light to maintain its metabolism. If the plant is kept in a dim corner, it may drop its oldest leaves by yellowing them to conserve energy.
Check: Assess the light levels; if the plant is more than 3-5 feet from a bright window or showing very slow growth, it likely needs more light.
Fix: Gradually move the plant to a spot where it receives bright, indirect light, such as near an east or west-facing window.
It is perfectly normal for the oldest, lowest leaves at the base of the plant to yellow and eventually die off as the Monstera grows larger. This is the plant's way of recycling nutrients from old foliage to fuel new growth.
Check: Check if only the lowest, oldest leaf is yellowing while the rest of the plant remains vibrant and continues to produce new, healthy growth.
Fix: No action is required, but you can prune the yellowed leaf once it has completely wilted to improve the plant's appearance.
When to worry
If yellowing begins to spread rapidly across multiple leaves or if the yellowing is accompanied by mushy, brown stems, the plant may have root rot and requires an immediate soil inspection and root pruning.
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Diagnose my MonsteraIt is best to wait until the leaf is at least 50% yellow or brown, as the plant is still extracting remaining nutrients from it.
Unfortunately, no; once a leaf has turned yellow, the chlorophyll has broken down and the process is irreversible. Focus on preventing further yellowing in healthy leaves.
While virus issues like the Strawberry Mild Yellow Edge Virus exist, they are extremely rare in Monstera deliciosa kept as houseplants; yellowing is almost always a cultural issue related to water or light.
Consistent with guidance from: Royal Horticultural Society, University of Florida IFAS Extension.