Why Are My Monstera Leaves Curling? Common Causes and Easy Fixes

If you are asking, “Why are my Monstera leaves curling?”, your plant is usually reacting to stress in its growing environment. The most common causes include underwatering, overwatering, low humidity, too much direct sunlight, temperature stress, poor drainage, root problems, and pests.

Monstera plants are popular houseplants because of their large, attractive leaves, but they can show visible signs when their growing conditions are not suitable. Curled leaves are one of those warning signs.

The good news is that most Monstera leaf curling problems can be improved once you identify the real cause and adjust the plant's care routine.

Quick Answer: Why Are My Monstera Leaves Curling?

Your Monstera leaves may be curling because of:

  • Underwatering

  • Overwatering

  • Low humidity

  • Poor drainage

  • Root rot

  • Too much direct sunlight

  • Heat stress

  • Cold drafts

  • Pest infestations

  • Poor soil conditions

  • Fertilizer or salt buildup

  • Environmental stress

The first thing to check is the soil moisture.

Dry soil and constantly wet soil can both cause stress, but they require completely different solutions.

1. Underwatering

Underwatering is one of the first things to investigate when Monstera leaves begin curling.

When the root zone becomes too dry, the plant cannot move enough water to its leaves. The leaves may curl inward, droop, or develop dry and crispy edges.

Signs Your Monstera May Need Water

Look for:

  • Dry soil

  • A lightweight pot

  • Curling leaves

  • Slight drooping

  • Crispy brown leaf edges

  • Soil pulling away from the sides of the pot

How to Fix Underwatering

If the soil is dry, water the plant thoroughly so moisture reaches the root zone.

A Monstera generally benefits from thorough watering followed by allowing the upper portion of the soil to dry before watering again.

Avoid watering according to a strict calendar.

Instead, check the soil regularly.

2. Overwatering

Too much water can also cause Monstera leaves to curl.

Overwatering keeps the root zone constantly wet and can reduce the oxygen available to the roots. Over time, excessively wet conditions can contribute to root damage and root rot.

Signs of Overwatering

Watch for:

  • Soil that remains wet for a long time

  • Yellow leaves

  • Drooping foliage

  • Slow growth

  • Soft stems

  • A sour smell from the soil

  • Brown or mushy roots

How to Fix Overwatering

Allow the soil to dry appropriately before watering again.

Also check:

  • Does the pot have drainage holes?

  • Is the potting mix well-draining?

  • Is excess water collecting in the saucer?

  • Is the container too large for the plant?

Monstera is vulnerable to root problems when the growing medium stays excessively wet.

3. Low Humidity

Monsteras naturally prefer humid conditions.

Dry indoor air can increase moisture loss from the leaves and may contribute to curling, dry edges, and other stress symptoms.

Low humidity can become more common when:

  • Heating systems are running

  • Air conditioning is used frequently

  • The plant is near a heater

  • The plant is near a strong air vent

Penn State Extension notes that Monstera prefers humidity above 50%, particularly when indoor air is very dry.

How to Improve Humidity

You can:

  • Use a humidifier nearby

  • Group compatible plants together

  • Keep the plant away from hot, dry air vents

  • Maintain a stable indoor environment

Avoid placing the plant directly beside a strong heating or cooling source.

4. Too Much Direct Sunlight

Monstera plants generally perform best in bright indirect light.

Strong direct sunlight can stress or scorch leaves, especially when a plant is suddenly exposed to intense light.

Possible signs include:

  • Curling leaves

  • Brown patches

  • Pale or bleached areas

  • Scorched leaf edges

How to Fix It

Move the Monstera to bright indirect light.

Avoid making sudden, extreme changes in light conditions.

Houseplant leaves can be damaged when plants are moved rapidly from lower light into intense sunlight.

5. Temperature Stress and Cold Drafts

Monstera plants prefer warm, stable indoor temperatures.

Cold drafts, sudden temperature changes, or excessive heat can stress the plant and contribute to leaf curling.

Keep your Monstera away from:

  • Cold windows

  • Exterior doors

  • Air-conditioning vents

  • Heating vents

  • Sudden temperature changes

Penn State Extension recommends warm conditions for Monstera and warns against cold drafts.

6. Poor Drainage

A Monstera may struggle when excess water cannot leave the container.

Poor drainage can keep roots too wet for extended periods.

Make sure your plant has:

  • A container with drainage holes

  • A suitable pot size

  • Well-draining potting mix

  • No standing water around the roots

Penn State and UConn guidance recommend well-draining growing media for healthy Monstera root development.

7. Root Problems

Healthy roots are essential for healthy leaves.

If roots are damaged, they may not be able to absorb enough water even when the soil is wet.

This means a plant can show signs similar to underwatering while actually suffering from overwatering or root rot.

Possible root problem signs include:

  • Curling and drooping leaves

  • Constantly wet soil

  • Slow growth

  • Yellowing leaves

  • Soft or mushy roots

  • Unpleasant soil odor

If you suspect root rot, inspect the root system carefully and correct the watering and drainage problem.

8. Pest Infestations

Pests can also contribute to curling leaves.

Common houseplant pests that may affect Monstera include:

  • Spider mites

  • Thrips

  • Aphids

  • Mealybugs

  • Scale insects

These pests can damage plant tissue or feed on plant sap, causing stress and distorted growth.

Check:

  • The undersides of leaves

  • Leaf joints

  • New growth

  • Stems

University guidance recommends routinely inspecting houseplants for insect and mite pests because they can contribute to visible plant problems.

9. Poor Soil Conditions

A heavy or poorly draining growing medium can cause watering problems.

If the soil stays wet too long, roots may struggle.

A suitable Monstera potting mix should support:

  • Drainage

  • Root oxygen

  • Moisture balance

  • Healthy root growth

Penn State Extension recommends a well-draining soilless potting mix rich in organic matter for Monstera.

10. Fertilizer or Salt Buildup

Too much fertilizer can stress houseplants.

Excess fertilizer salts may accumulate in the growing medium and interfere with normal root function.

Avoid applying more fertilizer simply because your Monstera leaves are curling.

First identify the cause.

If you suspect fertilizer buildup, review your fertilizing routine and follow product instructions carefully.

General houseplant guidance also identifies overfertilization and salt buildup as possible contributors to leaf problems.

How to Diagnose Curling Monstera Leaves

Use this simple process before making changes.

Step 1: Check the Soil

Is the soil:

  • Very dry?

  • Slightly moist?

  • Constantly wet?

This is the most important first clue.

Step 2: Check the Light

Ask:

  • Is the plant receiving direct afternoon sun?

  • Was it recently moved?

  • Is it close to a hot window?

Step 3: Check Humidity and Temperature

Look for:

  • Dry indoor air

  • Heating vents

  • Air-conditioning vents

  • Cold drafts

Step 4: Inspect for Pests

Check the undersides of leaves and new growth.

Step 5: Check Drainage

Make sure excess water can leave the container.

How Often Should You Water a Monstera?

There is no single watering schedule that works for every Monstera.

Watering needs depend on:

  • Pot size

  • Plant size

  • Light levels

  • Temperature

  • Humidity

  • Season

  • Potting mix

A practical approach is to water thoroughly and then allow the top portion of the growing medium to dry before watering again.

Penn State Extension recommends allowing the top 1–2 inches of soil to dry between waterings, while UConn notes that allowing the upper 2–3 inches to dry can be appropriate depending on growing conditions.

The exact timing may change throughout the year.

Can Curled Monstera Leaves Become Normal Again?

It depends on the severity and cause.

If curling is caused by temporary stress, improving the plant's growing conditions may prevent additional damage and support healthier growth.

However, severely damaged leaves may not completely return to their original appearance.

The most important sign of recovery is often healthy new growth.

Once the underlying problem is corrected, monitor new leaves.

How to Prevent Monstera Leaves From Curling

To prevent future problems:

  1. Check soil moisture before watering.

  2. Avoid both extreme dryness and constantly wet soil.

  3. Use a well-draining potting mix.

  4. Choose a pot with drainage holes.

  5. Provide bright indirect light.

  6. Keep humidity at a suitable level.

  7. Protect the plant from cold drafts and extreme heat.

  8. Inspect regularly for pests.

  9. Avoid excessive fertilizer.

  10. Monitor changes in the plant's environment.

Frequently Asked Questions

Why are my Monstera leaves curling inward?

Curling inward can be associated with moisture stress, including soil that has become too dry. However, other factors such as low humidity, root problems, heat, and pests should also be checked.

Can overwatering cause Monstera leaves to curl?

Yes. Excessively wet soil can damage roots and reduce their ability to provide water to the leaves, which can contribute to stress symptoms including curling or wilting.

Does low humidity cause Monstera leaves to curl?

Low humidity and dry indoor air can contribute to leaf curling and dry leaf damage in houseplants. Monstera generally prefers a relatively humid environment.

Should I cut off curled Monstera leaves?

Do not remove a leaf only because it is slightly curled. First identify and correct the underlying cause. Severely damaged or dying leaves can be removed with clean tools when appropriate.

Can too much sunlight cause Monstera leaves to curl?

Intense direct sunlight can stress houseplants and cause leaf damage. Monstera generally performs best in bright indirect light.

Final Thoughts

So, why are my Monstera leaves curling?

The answer is usually related to an environmental or care problem.

Start by checking the soil because underwatering and overwatering can produce similar stress symptoms but require opposite solutions. Then evaluate humidity, light, temperature, drainage, roots, and pests.

The best approach is:

Check the soil → inspect the leaves → examine the growing environment → identify the cause → make one targeted correction at a time.

With proper watering, well-draining soil, bright indirect light, suitable humidity, and regular pest checks, your Monstera can produce healthier new growth and reduce the risk of future leaf curling.