Why is Your Monstera Leaves Turning Yellow (Causes & Fixes)

Monstera leaves turning yellow is one of the most common problems houseplant owners encounter, and it is almost always a signal that something in the plant’s growing conditions needs to change.

The challenge is that at least eleven different problems produce very similar yellowing symptoms, from overwatering and root rot to underwatering, insufficient light, temperature stress, pest damage, and natural ageing.

Treating for the wrong cause wastes time and can make things worse.

Flushing a plant that is already waterlogged, or withholding water from one that is drought-stressed, will accelerate the decline rather than halt it.

This guide works through every major cause of yellowing with the diagnostic detail needed to identify your specific problem before you do anything to the plant.

Monstera plants, particularly Monstera Deliciosa (the Swiss Cheese Plant) and Monstera Adansonii, are tropical aroids native to the rainforest floors of Central and South America.

Understanding what that origin means for their care requirements explains most of the problems covered here.

You can read more about whether Monstera is a tropical plant and explore the full range of Monstera varieties if you want background on your specific plant.

How to Diagnose the Problem: Reading the Pattern of Yellowing

Before working through each cause individually, it is worth establishing a diagnostic approach. The pattern and location of the yellowing tells you as much as the symptom itself.

A Monstera that is yellowing on older lower leaves is showing a different problem from one where newly emerging leaves are pale.

Yellowing that starts at the leaf margins points to different causes than yellowing that begins between the veins. The table below matches common patterns to their most likely cause.

1. Overwatering and Root Rot

Overwatering is the single most common reason Monstera leaves turn yellow in a home environment, and it is the cause most frequently treated incorrectly because the symptoms closely resemble underwatering.

When the roots sit in waterlogged soil for extended periods they are deprived of oxygen.

Root cells die, anaerobic conditions encourage fungal pathogens, and the plant loses its ability to absorb water and nutrients regardless of how much is available in the soil.

The result is that the leaves yellow, droop, and eventually drop, exactly as they would if the plant were drought-stressed.

Yellowing from overwatering typically starts on the lower older leaves and progresses upward.

The leaves may also develop brown soft patches rather than the crispy brown edges typical of drought stress. In advanced cases you may notice the base of the stem becoming soft or discoloured.

The single most reliable diagnostic test is the soil check. Push your finger two to three inches into the potting mix.

If it feels consistently wet or soggy at that depth, overwatering is the likely culprit. If the soil has a sour, musty, or rotten odour, root rot has already set in.

A persistently wet soil surface, water that drains slowly or not at all, and soil that remains saturated for more than ten days after watering are all warning signs.

Adjusting your watering approach is covered in the full Monstera watering schedule guide.

Overwatering without root rot

If the soil is wet but there is no foul smell, root rot has not yet established and recovery is straightforward.

Stop watering immediately and allow the soil to dry out significantly before watering again.

Confirm that the drainage holes in the pot are clear and unblocked. If the pot sits in a saucer, empty the saucer after every watering so the roots are never sitting in standing water.

Review the frequency with which you are watering. A common mistake is watering on a fixed calendar schedule regardless of whether the soil actually needs it.

The correct approach is to check the soil at two to three inches depth and water only when that layer feels dry.

Root rot

If the soil smells sour or musty, root rot is already present. Remove the plant from its pot and inspect the roots. Healthy roots are firm and white or pale cream.

Rotted roots are brown or black, soft, and collapse when gently squeezed.

Cut away all affected root tissue with sterilised scissors or pruning shears.

Dust the cut surfaces with a sulphur-based fungicide powder and repot into fresh, well-draining Monstera potting mix, ideally with added perlite for improved aeration.

Do not return the plant to the original pot without cleaning it thoroughly with a diluted bleach solution first.

Fungal spores responsible for the rot will remain in the container and re-infect the new roots.

A complete treatment walkthrough is available in the how to fix root rot in a Monstera guide.

2. Underwatering

Underwatering produces yellowing through a different mechanism than overwatering, but the early symptoms overlap enough to cause confusion.

When a Monstera does not receive enough water, the plant draws moisture from older lower leaves to keep the growing tips and newer leaves functioning.

Those sacrificed leaves yellow, curl, and eventually dry out.

The sequence of symptoms matters for diagnosis. An underwatered Monstera wilts first, then yellows. The wilting reverses relatively quickly once you water the plant.

An overwatered Monstera also droops and yellows, but the wilting does not reverse quickly when you withhold water because the root damage has compromised the plant’s ability to absorb moisture.

Leaf edges and tips turn brown and crispy on an underwatered Monstera, rather than soft and yellowed as with overwatering. The soil at root depth will feel bone dry.

In very dry conditions, the potting mix can shrink away from the edges of the pot, which allows water to run straight down the gap without reaching the root zone.

If you pour water in and it drains unusually quickly, this may be happening.

If the leaves are curling as well as yellowing, see the guide to why Monstera leaves curl for a full breakdown of drought-related symptoms.

How to fix underwatering

Water the plant slowly and thoroughly until water runs freely from the drainage holes.

If the soil has become extremely dry and is repelling water (hydrophobic), water it two or three times in succession to allow full rehydration.

In cases where the soil has completely compacted, soak the pot in a basin of water for twenty to thirty minutes, allowing the root zone to absorb moisture from below.

Once the plant is rehydrated, switch to a consistent watering routine based on soil moisture rather than a fixed schedule.

It is also worth checking whether your Monstera is root-bound, as a pot-bound plant dries out much faster than one with adequate soil volume.

See whether Monstera likes to be root-bound for guidance on when repotting would help.

3. Insufficient Light

Monstera plants have a reputation for tolerating low light, and while they are more forgiving than many tropical houseplants, insufficient light is a genuine and commonly overlooked cause of yellowing.

Without adequate light, a Monstera cannot photosynthesise efficiently enough to maintain chlorophyll levels in its leaves.

The leaves gradually lose their deep green colour, becoming pale and washed-out. New leaves may emerge lighter than expected, and older leaves yellow and drop earlier than they should.

The pattern of light-related yellowing tends to be even and gradual across the whole plant, rather than concentrated on a few leaves.

The plant also typically shows other signs of low light: smaller leaves, slower or no growth, and an absence of the characteristic fenestrations (holes and splits) that give the Swiss Cheese Plant its name.

In most UK and US homes, east and west-facing windows provide the right balance of bright indirect light for Monstera.

North-facing windows in the UK often do not provide enough light. The full Monstera light requirements guide covers specific placement advice for different orientations and climates.

Using artificial lighting

If natural light is genuinely insufficient in your space, grow lights are a practical and effective solution.

Full-spectrum LED grow lights placed 30 to 60 cm above the plant for 12 to 14 hours per day can fully compensate for low natural light.

The best grow lights for Monstera guide covers specific product recommendations at different price points.

One important nuance: moving a Monstera from a dim position to bright light too quickly can cause bleaching rather than recovery.

Introduce the plant to brighter conditions gradually over two to three weeks.

4. Temperature Extremes and Low Humidity

Monstera plants evolved in humid tropical rainforests where temperatures remain stable between roughly 20 and 30 degrees Celsius year-round.

Significant departures from those conditions produce stress responses, and yellowing of the leaves is one of the first visible signs.

Low humidity causes water to evaporate from the leaf surface faster than the roots can supply it. The tips and margins of the leaves yellow first, and the damage spreads inward over time.

In more severe cases, yellowing transitions to brown crispy edges. The pattern typically originates at the leaf tips rather than spreading from the base of the leaf or appearing between the veins.

Cold temperatures from draughts near windows or doors in winter can cause sudden yellowing on the side of the plant closest to the cold source.

A leaf in direct contact with a cold window pane may yellow and drop within days.

Monstera plants should be kept between 18 and 27 degrees Celsius (65 to 80 degrees Fahrenheit).

Keep them away from heating vents, radiators, air conditioning units, and any cold draughts.

For UK growers especially, winter windowsill placement warrants attention as temperatures close to single glazed glass can drop well below the plant’s tolerance.

The winter care guide for Monstera covers seasonal adjustments in detail.

Improving humidity

Most UK and US homes run at 30 to 50 percent relative humidity, particularly in winter when heating is running. Monstera plants perform best above 50 to 60 percent.

You can read about the ideal humidity levels for Monstera and the most practical methods for achieving them.

Misting the leaves helps in the short term, though its effect on ambient humidity is temporary.

The full assessment of whether misting a Monstera actually improves humidity explains the limitations and alternatives.

A pebble tray filled with water placed beneath the pot provides a modest but consistent source of evaporation around the plant.

A dedicated room humidifier is the most reliable solution where ambient humidity is consistently low.

5. Transplant Shock

If your Monstera’s leaves began turning yellow within one to three weeks of repotting, transplant shock is the likely cause.

Repotting disrupts the root system, exposes roots to air, and changes the soil environment, all of which cause a temporary stress response.

Other triggers include repotting at the wrong time of year (winter is the worst, as the plant’s slower metabolism makes recovery much slower), moving to a very different soil type, or accidental root damage during the repotting process.

A pH mismatch between old and new soil can also contribute. If the new potting mix is significantly more alkaline than what the roots were accustomed to, the plant may struggle to absorb certain nutrients.

Using a quality potting mix for Monstera eliminates this variable.

Managing transplant shock

Move the plant back to where it was before repotting if light, temperature, and humidity were better there. Consistency in conditions helps the plant settle.

Keep the soil evenly moist but not waterlogged for the first two to three weeks after repotting.

The damaged root system cannot absorb as much water as normal, so the risk of overwatering is elevated during this recovery period.

Do not fertilise for at least four to six weeks after repotting. The roots need time to establish before being asked to process nutrients.

The full guide to repotting a Monstera covers timing, technique, and recovery in detail.

Yellow leaves that appeared due to transplant shock will not recover their green colour. Remove them once they have fully yellowed. If the plant is producing healthy new leaves, recovery is underway.

6. Pests: Spider Mites, Scale, Aphids, Thrips, and Mealybugs

Pest infestations are a frequently overlooked cause of yellowing Monstera leaves, particularly because most of the culprits are tiny and concentrate on the undersides of leaves where they are not immediately visible during a casual inspection.

The guide to the most common Monstera pests covers identification and treatment for the full range of threats.

Yellowing from pest damage tends to be patchy or localised rather than uniform. You may see yellow spots or speckled stippling across a leaf rather than an entire leaf turning yellow at once.

The presence of fine webbing, sticky residue, distorted growth, or visible insects on the leaf undersides confirms a pest problem rather than a cultural issue.

Spider mites

Spider mites are among the most damaging pests for Monstera and among the hardest to detect in the early stages.

They are barely visible to the naked eye and appear as tiny moving dots on the undersides of leaves.

The damage is distinctive: a fine stippling or speckling of tiny pale yellow dots across the leaf surface, produced as the mites pierce individual cells and extract the contents.

Fine silky webbing between leaves or across the undersides of affected leaves is the most reliable confirmation.

Spider mites thrive in hot, dry conditions. Increasing humidity is both a preventive measure and a deterrent for active infestations.

Washing the leaves thoroughly with a firm jet of water dislodges most colonies quickly.

For persistent infestations, neem oil solution applied to all leaf surfaces, including undersides, is effective.

Regularly cleaning Monstera leaves also makes early detection much easier and removes the dust that mites prefer.

Scale insects

Scale insects appear on stems and leaf undersides as small hard brown, tan, or white bumps.

They feed by piercing the plant tissue and extracting sap, weakening the plant progressively over weeks and months.

The yellowing from scale tends to be gradual and general rather than sudden and localised.

You may notice the plant losing vigour and leaves fading before individual yellow patches become obvious. Check along the stems and at the leaf axils where scale concentrates.

Small infestations can be removed manually using a cotton bud dipped in rubbing alcohol applied directly to each scale insect.

Larger infestations respond well to horticultural oil spray applied thoroughly to all surfaces.

Aphids

Aphids cluster on new growth and the undersides of tender young leaves. They are soft-bodied, pear-shaped insects that may be green, yellow, black, or grey.

They excrete honeydew, a sticky substance that coats the leaves and can lead to sooty mould growth.

The new leaves of an aphid-affected Monstera may be distorted, curled, or stunted as well as yellowing.

A strong jet of water from a shower head or hose removes most aphid colonies effectively without any chemical intervention.

Thrips

Thrips are slender, tiny insects that rasp the leaf surface and cause silver or pale streaking.

Heavy infestations can produce enough cell damage to result in yellowing and distortion of new leaves.

Getting rid of thrips on Monstera is more involved than treating aphids, as the insects hide simultaneously in the soil and on the plant.

The dedicated guide to getting rid of thrips on Monstera covers the full treatment protocol.

Mealybugs

Mealybugs appear as small white cottony clusters in the leaf axils, along stems, and at the base of the plant.

They sap the plant’s strength steadily and cause yellowing and premature leaf drop.

Neem oil and insecticidal soap are both effective, but mealybugs require persistent treatment over several weeks to fully eliminate because they return from eggs in the soil.

7. Fungal Disease: Powdery Mildew

Root rot (covered under overwatering above) is the most commonly encountered fungal problem in Monstera.

Powdery mildew is a second fungal threat that can independently cause yellowing and is worth knowing how to identify.

Powdery mildew appears as a white or grey powdery coating on the upper surfaces of Monstera leaves. As the infection progresses, affected areas of the leaf yellow and deteriorate.

It is caused by fungal spores and favoured by poor air circulation, high humidity without adequate airflow, and the stress of crowding too many plants together in a small space.

The defining diagnostic sign is the white powdery coating itself. No other common Monstera problem produces this surface deposit.

If the yellowing is accompanied by a powdery white dusting on the leaf surface, powdery mildew is the cause and the treatment differs from every other cause in this guide.

Improving air circulation around the plant and reducing overcrowding are the most important preventive measures. Avoid overhead watering and aim to keep the leaves as dry as possible.

For established infections, a spray of diluted bicarbonate of soda solution (one teaspoon per litre of water with a small amount of washing-up liquid as a spreader) applied to all leaf surfaces can reduce the spread.

Commercial fungicides labelled for powdery mildew are also effective. Remove and dispose of severely affected leaves.

8. Over-Fertilisation and Nutrient Salt Burn

Over-fertilising a Monstera produces damage that closely resembles drought stress because the mechanism is similar: excess fertiliser salts in the soil draw water out of the root cells through osmosis, creating chemical dehydration even when the soil is adequately moist.

The symptoms tend to affect the oldest leaves first and progress through the plant over time. Leaf edges and tips turn yellow, then brown and crispy.

In severe cases the whole leaf may yellow and drop. The plant may also show unusually soft, floppy new growth.

The diagnostic sign that distinguishes over-fertilisation from drought is a white crusty deposit on the soil surface or around the drainage holes of the pot.

This is mineralised fertiliser salt residue. Soil that smells slightly unusual or chemical is another indicator.

Monstera plants need relatively modest feeding: a balanced liquid fertiliser at half the recommended strength, applied every four to six weeks during the growing season (spring and summer), is sufficient.

Stop feeding entirely in autumn and winter when growth slows. The full Monstera fertiliser guide covers specific product types, timing, and application rates.

Fixing over-fertilisation

Flush the soil thoroughly with plain water to leach out the accumulated nutrient salts.

For container plants, water slowly until it runs freely from the drainage holes, then repeat this process two or three times.

Withhold all fertiliser for the remainder of the growing season. The plant will recover on its existing nutrient reserves without requiring additional input.

Some growers use eggshells for Monstera plants as a gentle, slow-release calcium source.

This is generally a safer approach to micronutrient supplementation than liquid fertilisers because the release rate is very gradual and the risk of over-application is low.

9. Natural Ageing

Not every yellow Monstera leaf signals a problem. Like all plants, Monstera naturally retires older leaves over time, redirecting the energy and nutrients stored in those leaves toward producing new growth.

Natural ageing typically affects the lowest, oldest leaves on the plant, those at the base of the stem, or the leaves furthest from the actively growing tip.

They yellow gradually and then fall away cleanly. The rest of the plant looks healthy, and new growth continues to emerge normally.

The key distinction from problem-caused yellowing is the pattern: one or two lower leaves at a time, the rest of the plant completely unaffected, and no other symptoms such as drooping, pests, or soil problems.

Losing one or two older leaves per month while the plant is actively producing new growth is the plant’s normal housekeeping and requires no intervention other than removing the yellowed leaves to keep the plant tidy.

10. Pot Size and Drainage Problems

The container your Monstera grows in directly influences its vulnerability to both overwatering and underwatering.

Drainage problems at the pot level can cause yellowing independently of how carefully you actually water the plant.

A pot that is too large for the plant contains more soil than the roots can effectively draw moisture from.

The excess soil stays wet for extended periods after watering, creating waterlogging conditions even when the watering frequency is appropriate.

A pot without drainage holes, or with blocked drainage holes, prevents excess water from escaping and inevitably leads to waterlogging and root rot.

This is one of the most preventable causes of yellowing.

The right pot size for a Monstera is roughly two inches larger in diameter than the plant’s current root ball.

Selecting the right container material and size is covered in the guide to choosing the best pot for a Monstera.

Material matters as well. Terracotta pots are porous and allow moisture to evaporate through the walls, which reduces waterlogging risk significantly.

Plastic and glazed ceramic retain moisture longer and require less frequent watering. Neither is wrong, but they demand different care approaches.

11. Seasonal Changes and Their Effect on Monstera Health

The seasons affect Monstera health indirectly through their influence on light levels, temperature, humidity, and the rate at which soil dries out, all of which then produce the symptoms covered in the earlier sections.

In winter, natural light levels drop significantly in the UK and in most of the northern United States.

The same Monstera that was in an adequately bright position in July may be receiving insufficient light in December without having moved.

Central heating simultaneously reduces indoor humidity, and cold windowsills may expose the plant to temperatures below its tolerance.

The combination of reduced growth rate, lower light, drier heated air, and potential cold draughts creates multiple simultaneous stressors in winter.

Yellowing is a common result. The soil also dries out much more slowly in winter, significantly increasing the risk of accidental overwatering if you continue on a summer watering schedule.

The full winter care guide for Monstera is the most efficient path through a winter yellowing diagnosis.

In summer, reversed risks apply: increased sun intensity, higher temperatures, faster soil drying, and the temptation to move the plant outdoors.

If you do take your Monstera outside during warmer months, the guide to Monstera outside in summer explains what sun exposure levels the plant can tolerate, direct summer sun that seems mild to us can bleach and severely damage the leaves.

Quick Diagnostic Reference

Use this table to identify the most likely cause from what you are seeing, then follow the relevant section above for the fix.

Frequently Asked Questions

Why are my Monstera leaves turning yellow?

The most common reasons Monstera leaves turn yellow are overwatering, underwatering, insufficient light, low humidity, and natural ageing of older leaves.

The pattern of yellowing is the most useful diagnostic tool.

Yellowing that starts on the lowest older leaves while the rest of the plant looks healthy usually indicates natural ageing or mild underwatering.

Yellowing accompanied by soggy soil and a sour smell indicates overwatering and likely root rot. Pale uniform yellowing across newer leaves points to insufficient light.

If your plant is showing general decline alongside the yellowing, the guide to reviving a dying Monstera provides a systematic recovery approach.

Should I remove yellow Monstera leaves?

Yes. Once a Monstera leaf has turned yellow it will not recover its green colour.

The plant continues to draw resources from those leaves as they die, so removing them cleanly at the stem allows the plant to redirect energy toward new growth and recovery.

Use clean, sharp scissors or pruning shears. Cut at the point where the leaf stem meets the main stem, leaving no stub.

Can yellow Monstera leaves turn green again?

No. Once chlorophyll has broken down and a Monstera leaf has turned yellow, that leaf cannot restore its green colour. The underlying cell damage is permanent.

However, once the cause is corrected, the new growth the plant produces will emerge healthy and green. The goal is to stop further yellowing, not to reverse the colour in affected leaves.

Why are my new Monstera leaves turning yellow?

New leaves emerging yellow is a different and more concerning symptom than older leaves yellowing. New growth should emerge as a bright pale green and deepen in colour over days and weeks.

New leaves that emerge yellow or very pale typically indicate: insufficient light preventing the leaf from developing chlorophyll properly; severe nutrient deficiency, particularly iron or magnesium; overwatering that has compromised the root system’s ability to absorb nutrients; or pH-related nutrient lockout in the soil.

Check the light levels first, then the soil moisture and root condition, and then consider whether the plant has been recently and adequately fed.

Why is my Monstera Adansonii turning yellow?

Monstera Adansonii is particularly sensitive to overwatering and low humidity because of its thinner leaf tissue relative to Monstera Deliciosa.

The causes of yellowing are the same across species, but Adansonii reacts more quickly to environmental fluctuations.

If you have Monstera Peru that is also yellowing, the dedicated guide to why Monstera Peru leaves turn yellow covers the specific care requirements for that species.

How do I tell the difference between overwatering and underwatering yellowing?

The soil is the definitive test. Push your finger two to three inches into the potting mix.

If the soil is consistently wet or soggy at depth, the problem is overwatering. If it smells sour or rotten, root rot is present.

If the soil is completely dry and the pot feels light when lifted, the plant needs water.

The texture of the yellowing also helps: overwatered leaves tend to yellow softly and may become mushy at the base.

Underwatered leaves yellow and then turn crispy and brown at the edges.

Both produce wilting, but the wilting from underwatering reverses within hours of thorough watering, while overwatered wilting does not.

Is my Monstera yellow because of the water I’m using?

Tap water with high fluoride or chlorine content, or very hard water with high mineral content, can contribute to yellowing leaf tips and margins over time.

This is rarely the primary cause but can worsen other problems.

Allowing tap water to sit in an open container overnight allows most chlorine to dissipate. Using filtered water or collected rainwater avoids the issue entirely.

Hard water over time also contributes to the mineral salt buildup that produces the crusty soil surface associated with over-fertilisation.

How can I prevent Monstera leaves from turning yellow?

The most important preventive measures are: checking soil moisture before every watering rather than following a fixed schedule; providing bright indirect light; maintaining humidity above 50 percent; keeping the plant away from cold draughts and direct heat sources; using a well-draining potting mix in a pot with clear drainage holes; and feeding lightly only during the growing season.

Natural ageing of older leaves cannot be prevented and should not be a concern while the rest of the plant is healthy.

For comprehensive year-round care guidance, see the complete Monstera care guide.

Key Takeaways

1. Check the soil before doing anything else. Soil moisture and smell distinguish overwatering from underwatering – the two most commonly confused causes of yellowing.
2. Read the pattern, not just the symptom. Lower older leaves yellowing is a different problem from new growth emerging pale. Localised patchy yellowing suggests pests. Uniform fading across new growth suggests light or nutrient issues.
3. Natural ageing is normal. Losing one or two lower leaves per month while the plant is actively growing requires no intervention. Remove the yellow leaves and observe.
4. Root rot moves fast – act immediately. If the soil smells sour and the roots are brown and mushy, repot into fresh mix and remove all damaged root tissue with sterilised tools.
5. Light is consistently underestimated. Pale new growth and slow development are usually visible before yellowing becomes obvious. Inadequate light is the cause most easily improved with minimal disruption to the plant.
6. Inspect leaf undersides at every watering. Spider mites and scale insects are easily missed until the infestation is large. Early treatment is far more effective and less disruptive than late intervention.
7. Water by soil condition, not by calendar. Watering on a fixed schedule regardless of actual soil moisture is the most common cause of both overwatering and underwatering yellowing.
8. Feed lightly during the growing season only. A balanced fertiliser at half strength every four to six weeks in spring and summer is sufficient. Over-fertilisation produces salt burn that looks like drought stress.
9. Yellow leaves will not turn green again. Remove them cleanly and focus on correcting the underlying cause so new growth emerges healthy.
10. Adjust care with the seasons. Reduce watering frequency in winter, watch humidity levels when heating is running, and reassess light levels as the days shorten significantly.