You bought a Monstera because you wanted those huge, dramatic leaves covered in splits and holes.

Instead?

Leaf.

Leaf.

Another completely solid leaf.

And now you’re wondering:

Why isn’t my Monstera getting fenestrations?

First, don’t panic. A Monstera producing solid leaves doesn’t necessarily mean anything is wrong with it.

Fenestrations—the splits and holes that develop in Monstera leaves—are influenced heavily by plant maturity and growing conditions.

If your Monstera isn’t producing them yet, there are several things you should check before assuming you somehow ended up with the world’s only Monstera that refuses to split.

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What Are Monstera Fenestrations?

Fenestrations are the natural openings that develop in the leaves of mature Monsteras.

Depending on the age and maturity of the plant, these may appear as:

• Splits extending inward from the leaf edge
• Interior holes surrounded completely by leaf tissue
• A combination of splits and interior fenestrations

Young Monstera deliciosa plants typically begin with smaller, heart-shaped leaves without fenestrations.

As the plant matures and climbs, its leaves can become progressively larger and more complex.

That means the small solid leaves on a juvenile Monstera aren’t defective.

They’re doing exactly what they’re supposed to do.

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When Do Monstera Leaves Start Getting Fenestrations?

There’s no exact number of leaves or months you can count before your Monstera starts producing fenestrations.

Growth depends heavily on the plant’s maturity and environment.

A young plant may produce several completely solid leaves before its first split appears.

Then you might see:

One split.

Then several.

Then eventually interior fenestrations.

This progression doesn’t always happen perfectly with every leaf, either.

Growing conditions matter.

A Monstera can produce a beautifully fenestrated leaf and then follow it with a smaller, less mature-looking leaf if its environment changes significantly.

So if you want increasingly mature leaves, the goal isn’t just waiting.

It’s giving the plant conditions that support mature growth.

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1. Your Monstera Is Still Too Young

This is the simplest explanation.

Young Monstera deliciosa plants naturally produce juvenile foliage.

You can’t force a tiny juvenile Monstera to immediately produce giant mature leaves just because you bought an expensive grow light and asked nicely.

It needs time to develop.

If your plant is:

• Small
• Recently propagated
• Growing from a young cutting
• Producing relatively small leaves

…solid foliage may be completely normal.

Instead of focusing entirely on fenestrations, look for overall progress.

Are the new leaves getting larger?

Is the stem becoming stronger?

Is the plant climbing?

Those are all signs that you’re moving in the right direction.

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2. Your Monstera Needs More Light

If maturity is one half of the fenestration equation, light is one of the biggest environmental factors.

Monsteras can survive in relatively modest indoor light.

But surviving and producing large, mature foliage are not the same thing.

A Monstera growing several feet away from a dim window might remain alive for years while producing smaller, less mature leaves.

If your Monstera isn’t fenestrating, evaluate how much light it’s actually receiving.

Signs your Monstera may need more light include:

• Small new leaves
• Long spaces between leaves along the stem
• Growth stretching toward the window
• Slow growth
• Loss of mature leaf characteristics
• New leaves becoming progressively smaller

Move the plant closer to an appropriate bright window or consider supplemental grow lighting.

Just don’t move a plant from a dark corner directly into intense sunlight overnight.

Leaves that aren’t acclimated to strong direct sun can scorch.

Increase exposure gradually.

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3. Your Monstera Isn’t Climbing

This is one of the most overlooked parts of growing Monsteras indoors.

Monstera deliciosa is a climbing plant.

In nature, it climbs trees and other structures using aerial roots.

As the plant climbs upward and matures, it can produce increasingly large and fenestrated foliage.

Indoors, we often put Monsteras into pots and let them flop sideways across the room.

They’ll grow that way.

But if your goal is large, mature leaves, giving the plant vertical support can help recreate its natural growth habit.

Options include:

• Moss poles
• Coir poles
• Wooden planks
• Cedar boards
• Trellises
• Other sturdy vertical supports

The support needs to actually support the main stem.

Don’t tie individual leaf petioles tightly to the pole.

Leaves need to be able to move and orient themselves toward light.

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4. Your Support Isn’t Actually Supporting the Plant

Simply putting a moss pole somewhere in the pot doesn’t automatically make your Monstera climb.

You need to position the correct side of the plant against the support.

Monsteras have a front and back.

The leaves generally emerge toward the front.

Aerial roots emerge from the back of the stem.

That back side is what you want positioned toward your climbing support.

This allows the aerial roots and stem to interact naturally with the structure.

If your Monstera is facing the wrong direction, don’t aggressively twist the stem around.

Work with the plant’s existing growth pattern.

Monsteras are surprisingly directional once you know what you’re looking at.

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5. Your Monstera Isn’t Getting Enough Nutrition

Producing increasingly large leaves requires resources.

If your Monstera has been sitting in the same depleted potting mix for years without receiving nutrients, growth may eventually suffer.

During active growth, an appropriate houseplant fertilizer can help provide nutrients the plant needs.

Follow the fertilizer manufacturer’s directions rather than assuming more fertilizer means bigger leaves.

It doesn’t.

Overfertilizing can damage roots and create an entirely different problem.

Fertilizer should support good growing conditions.

It cannot compensate for:

• Poor light
• Root rot
• Inappropriate watering
• Cold temperatures

If your Monstera is sitting in a dark corner, adding extra fertilizer isn’t going to magically produce fenestrations.

Fix the light first.

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6. Your Monstera Has Been Recently Propagated or Cut Back

This one surprises people.

You might take a cutting from a mature Monstera with highly fenestrated leaves and expect every future leaf to look exactly the same.

Not always.

After propagation, major root loss, or significant environmental stress, the plant may temporarily produce smaller or less mature-looking foliage.

It needs to establish itself.

Focus on creating a strong root system and healthy new growth.

As the plant becomes established and climbs under appropriate conditions, leaf size and complexity may increase again.

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7. Something Is Stressing the Plant

If your Monstera previously produced large fenestrated leaves but suddenly starts producing smaller, simpler foliage, look for environmental stress.

Possible causes include:

• Significant decrease in light
• Root problems
• Improper watering
• Pest infestations
• Temperature stress
• Recent repotting
• Major root disturbance
• Nutrient problems

One less-fenestrated leaf isn’t necessarily an emergency.

But several progressively smaller leaves are worth investigating.

Your plant is giving you information.

Pay attention to the trend rather than obsessing over a single leaf.

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Does Humidity Cause Monstera Fenestrations?

Humidity can support healthy tropical plant growth, but increasing humidity alone isn’t a magic fenestration switch.

If your Monstera is sitting in insufficient light with no climbing support, moving your humidifier three feet closer isn’t suddenly going to produce giant leaves.

Humidity is part of the overall growing environment.

For mature growth, I would prioritize:

1. Adequate light
2. Plant maturity
3. Vertical climbing support
4. Healthy roots
5. Proper watering
6. Appropriate nutrition

Then optimize humidity as part of maintaining good overall growing conditions.

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Does Cutting Monstera Leaves Make Them Split?

No.

Please don’t cut your Monstera leaves to “encourage” fenestrations.

Natural fenestrations form while a new leaf is developing.

The leaf emerges already containing its splits and holes.

Cutting an existing leaf doesn’t teach the plant to produce fenestrated foliage.

It just gives you a Monstera leaf with scissors taken to it.

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Can You Make Existing Monstera Leaves Fenestrate?

No.

Once a leaf has unfurled, its basic structure is already determined.

A solid juvenile leaf isn’t going to suddenly develop natural interior holes six months later.

Instead, focus on the next leaf.

Improving the plant’s growing conditions influences future growth.

This is one of the most important concepts in houseplant care:

You often can’t repair old growth—but you can improve what comes next.

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Do Grow Lights Help Monsteras Fenestrate?

They can.

A good grow light can provide supplemental light when natural indoor lighting isn’t sufficient.

This is particularly helpful:

• During winter
• In darker homes
• When windows face unfavorable directions
• When plants are positioned away from windows

But placement matters.

A grow light across the room isn’t necessarily providing meaningful light to your plant.

Light intensity decreases significantly as distance increases.

Follow the manufacturer’s recommendations for positioning your particular grow light.

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Why Did My Monstera Stop Producing Fenestrated Leaves?

This is different from a young Monstera that has never fenestrated.

If your plant used to produce fenestrations and stopped, something may have changed.

Think back.

Did you:

• Move it farther from the window?
• Move houses?
• Remove its support?
• Take a cutting?
• Repot it?
• Experience a seasonal light decrease?
• Have a pest problem?
• Damage the roots?

A mature plant suddenly producing increasingly juvenile foliage can indicate that its current environment isn’t supporting the same level of growth it previously maintained.

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How to Encourage More Fenestrations

If your Monstera is healthy but isn’t producing the leaves you want, focus on improving its growing environment rather than looking for a trick.

Give it more appropriate light.

This is where I’d start.

Move it toward a brighter window or add supplemental grow lighting when necessary.

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Give it something to climb.

A sturdy vertical support can encourage a more natural climbing growth habit.

Position the back of the stem toward the support.

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Let it mature.

Sometimes the solution is simply time.

A juvenile plant needs to become a mature plant.

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Keep the roots healthy.

Avoid keeping the potting mix constantly saturated.

Use an appropriate container and well-draining substrate.

Healthy foliage starts with healthy roots.

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Feed appropriately during active growth.

Provide appropriate nutrition according to the fertilizer you’re using.

Don’t overdo it.

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Stop changing everything constantly.

Monsteras appreciate consistency.

If you move the plant every two weeks, repot it unnecessarily, change the soil, change the lighting, move it again, and then wonder why it isn’t producing giant leaves…

Give the plant a minute.

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How I Would Troubleshoot a Monstera Without Fenestrations

If my Monstera were producing solid leaves, I’d check things in this order:

1. How old and mature is the plant?

If it’s juvenile, I wouldn’t worry.

2. How much light is it actually getting?

Not “the room is bright.”

How much light is reaching the leaves?

3. Is it climbing?

If it’s crawling sideways across the floor, I’d give it vertical support.

4. Are new leaves getting larger?

Increasing leaf size is a good sign.

5. Are the roots healthy?

If growth is declining, I’d investigate watering and root health.

6. Has anything changed recently?

Seasonal changes, moving the plant, propagation, repotting, or stress can affect new growth.

Then I’d make the necessary adjustment and wait for future leaves.

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What About Monstera Thai Constellation?

The same general principles apply to Monstera deliciosa ‘Thai Constellation.’

Young Thai Constellations can produce smaller leaves with few or no fenestrations.

As the plant matures under appropriate conditions, leaves can become larger and develop increasingly complex fenestrations.

However, variegated Monsteras have less chlorophyll-containing leaf area than fully green plants, making good lighting particularly important.

Bright appropriate light can support healthy growth while also helping the plant maintain its characteristic variegation.

Again, avoid suddenly exposing an acclimated indoor plant to harsh direct sun.

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What About Monstera Albo?

Variegated Monstera deliciosa plants follow the same basic maturity pattern.

A young or recently propagated plant may produce relatively simple foliage.

With maturity, adequate light, healthy roots, nutrition, and climbing support, subsequent leaves may become increasingly large and fenestrated.

Don’t judge the plant based on one leaf.

Watch the progression.

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Fenestrations Aren’t the Best Measure of Plant Health

It’s easy to get obsessed with fenestrations.

Especially when social media is full of Monsteras with enormous leaves that look like someone attacked them with a hole punch.

But a healthy juvenile Monstera with solid leaves is still a healthy Monstera.

Fenestrations are a sign of maturity—not a requirement for plant health.

Focus first on growing a plant with:

• Healthy roots
• Strong stems
• Consistent growth
• Good leaf color
• Increasing leaf size

Give it enough light.

Let it climb.

Keep the roots healthy.

And then give it time.

Eventually, you may notice something exciting when the next leaf begins to unfurl.

One tiny split.

Then another.

Then interior fenestrations.

And suddenly you’ll be staring at every new leaf before it even finishes unfurling.

Because apparently that’s just what Monstera ownership turns us into.

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Frequently Asked Questions About Monstera Fenestrations

Why doesn’t my Monstera have fenestrations?

The plant may simply be juvenile. Insufficient light, lack of climbing support, environmental stress, or poor growing conditions can also contribute to smaller, less mature foliage.

At what age do Monsteras develop fenestrations?

There isn’t a specific age when every Monstera begins fenestrating. Development depends on maturity and growing conditions rather than a universal timeline.

Does more light create more Monstera fenestrations?

Adequate light can support larger, more mature growth and is one of the most important environmental factors to evaluate. However, maturity and climbing habit also matter.

Will a moss pole make my Monstera fenestrate?

A moss pole doesn’t instantly create fenestrations, but providing appropriate vertical support allows the Monstera to follow its natural climbing growth habit, which can support increasingly mature foliage.

Can an existing Monstera leaf develop fenestrations?

No. The structure of the leaf is determined before it unfurls. Improving conditions affects future leaves rather than adding natural fenestrations to existing foliage.

Should I cut my Monstera leaves to encourage splits?

No. Cutting leaves does not encourage natural fenestrations and unnecessarily damages healthy foliage.

Why did my Monstera’s new leaf have fewer fenestrations?

A single simpler leaf isn’t necessarily concerning. If several new leaves become progressively smaller or less mature, check for changes in light, root health, watering, climbing support, temperature, or other environmental conditions.

How do I get bigger Monstera leaves?

Provide strong appropriate light, healthy roots, consistent care, adequate nutrition, and a sturdy structure for the plant to climb. Leaf size generally increases as a healthy Monstera matures.

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Continue Reading

Building a bigger, healthier Monstera? These guides can help:

How to Make Monstera Leaves Bigger — Learn which growing conditions have the biggest impact on mature leaf size.

Monstera Aerial Roots: Should You Cut Them? — Understand what aerial roots actually do and how they help your Monstera climb.

Why Are My Monstera Leaves Turning Yellow? — Troubleshoot watering, root problems, light, pests, and natural leaf aging.

How Often Should You Water a Monstera? — Learn why checking your soil works better than following a fixed watering schedule.