Why Is My Monstera Turning Yellow? 8 Common Causes

Why Is My Monstera Turning Yellow?

If you've ever walked over to your beloved Monstera deliciosa and noticed a leaf looking a little... off, you're not alone. Yellowing leaves are one of the most common concerns Monstera owners face, and the good news is that in most cases, it's totally fixable. The tricky part is figuring out why it's happening in the first place.

Let's walk through the eight most likely culprits behind your Monstera's yellow leaves — and exactly what to do about each one.

1. Overwatering (The Most Common Cause)

Overwatering is the number one reason Monstera leaves turn yellow. When roots sit in soggy soil for too long, they can't absorb oxygen properly, leading to root rot and — you guessed it — yellow leaves.

How to tell: The yellowing is often soft, mushy, and widespread across multiple leaves. The soil may smell musty or feel constantly wet.

What to do:

Let the top 2 inches of soil dry out completely before watering again.
Make sure your pot has pots with drainage holes.
If root rot has set in, remove the plant from its pot, trim any black or mushy roots, and repot into fresh, well-draining soil.

2. Underwatering

On the flip side, too little water can also cause yellowing — though it usually comes alongside dry, crispy leaf edges rather than soft, limp leaves.

What to do: Stick your finger 2 inches into the soil. If it's bone dry, give your Monstera a thorough drink and establish a more consistent watering schedule. Aim to water every 1–2 weeks depending on your home's humidity and light levels.

3. Too Much Direct Sunlight

Monsteras love bright, indirect light. When placed in harsh direct sun, leaves can scorch and turn yellow or even bleached white in patches.

What to do: Move your Monstera to a spot that gets filtered light — think a few feet back from a south or west-facing window, or near a sheer curtain. An east-facing window is often ideal.

4. Not Enough Light

Too little light slows photosynthesis, causing older leaves to yellow and drop as the plant conserves energy. If your Monstera is in a dark corner and putting out pale, yellow growth, light is likely the issue.

What to do: Move it closer to a window or supplement with a grow light. Monsteras thrive in medium to bright indirect light for at least 6 hours a day.

5. Nutrient Deficiency

A lack of essential nutrients — especially nitrogen, magnesium, or iron — can cause yellow leaves. This is common in plants that haven't been fertilized in a long time or are growing in depleted soil.

How to tell: Nitrogen deficiency typically causes older, lower leaves to yellow first. Magnesium deficiency shows up as yellowing between the leaf veins (interveinal chlorosis).

What to do:

Feed your Monstera with a balanced liquid balanced liquid fertilizer (like a 20-20-20) once a month during spring and summer.
Avoid fertilizing in fall and winter when the plant is resting.
If you suspect a specific deficiency, a fertilizer with added magnesium or chelated iron can help.

6. Root Bound Conditions

When a Monstera outgrows its pot, its roots have nowhere to go — and nutrient and water uptake becomes inefficient. This stress often shows up as yellowing leaves.

How to tell: Roots poking out of drainage holes or circling visibly at the soil surface are telltale signs.

What to do: Repot your Monstera into a container 1–2 inches larger in diameter. Spring is the best time to repot. Check out our guide on when and how to repot your Monstera for a step-by-step walkthrough.

7. Pests

Common houseplant pests like spider mites, scale insects, and mealybugs can cause yellowing leaves by feeding on your plant's sap. If you notice small bumps, webbing, or sticky residue alongside the yellowing, pests may be to blame.

What to do:

Inspect both sides of the leaves carefully under good lighting.
Wipe leaves down with a damp cloth or cotton ball dipped in rubbing alcohol.
Treat the plant with neem oil or insecticidal soap spray, repeating every 7–10 days until the infestation is gone.
Isolate the affected plant to prevent spreading to other houseplants.

For a deeper dive, visit our Pests & Disease section to learn how to identify and treat the most common Monstera pest problems.

8. Natural Leaf Aging

Here's some reassuring news: sometimes, a yellow leaf is just a yellow leaf. Monsteras naturally shed older, lower leaves as they grow. If only one or two leaves at the base of the plant are yellowing while new growth looks healthy and green, this is completely normal.

What to do: Simply trim the yellow leaf at the base with clean scissors or pruning shears and move on. No action needed beyond that!

How to Diagnose the Problem Quickly

Not sure which issue applies to you? Run through this quick checklist:

Is the soil soaking wet? → Likely overwatering.
Is the soil bone dry? → Likely underwatering.
Are leaves bleached or scorched? → Too much direct sun.
Is new growth pale and small? → Too little light or nutrients.
Do you see bugs or webbing? → Pest problem.
Is only one lower leaf affected? → Probably natural aging.

Keeping Your Monstera Happy and Green

The best way to prevent yellow leaves is to build a consistent care routine. Monsteras are resilient plants, but they do thrive with a little attention. Water properly, provide bright indirect light, feed during the growing season, and check regularly for pests.

If you want to go further in your Monstera journey, explore our related guides on Monstera propagation, choosing the right soil mix, and understanding Monstera growth patterns — all designed to help your plant thrive at every stage.

Remember: a yellow leaf or two doesn't mean you've failed as a plant parent. It's your Monstera's way of communicating with you. Now that you know what to listen for, you're well on your way to raising a lush, thriving plant. 🌿

Frequently Asked Questions

Why are my Monstera leaves turning yellow?

The most common causes are overwatering, underwatering, too much or too little light, nutrient deficiency, and being root bound. Identifying whether leaves are soft and mushy versus dry and crispy helps pinpoint the specific issue.

How do I fix an overwatered Monstera with yellow leaves?

Let the top 2 inches of soil dry out before watering again, ensure the pot has drainage holes, and if root rot is present, trim black or mushy roots and repot in fresh well-draining soil.

How much light does a Monstera need to prevent yellow leaves?

Monsteras thrive in medium to bright indirect light for at least 6 hours a day. Place them near a sheer curtain or a few feet from a south or west-facing window, as direct sun can scorch leaves.

Should I fertilize my Monstera to stop leaves turning yellow?

Yes, if nutrient deficiency is the cause. Feed with a balanced liquid fertilizer like 20-20-20 once a month during spring and summer, and avoid fertilizing in fall and winter.

How do I know if my Monstera has a magnesium deficiency?

Magnesium deficiency shows up as yellowing between the leaf veins, known as interveinal chlorosis. A fertilizer with added magnesium can help correct this.

Why Is My Monstera Turning Yellow? 8 Common Causes