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Your monstera adansonii leaves turning yellow is usually a sign that something in your care routine needs adjusting.
The good news is that this is one of the most common issues plant parents face, and it’s almost always fixable once you identify the culprit.
In this post, we’ll walk through the top reasons why your monstera adansonii leaves might be turning yellow, how to diagnose the exact problem, and what you can do to bring your plant back to vibrant health.
Let’s dig in and save those leaves.
Why Your Monstera Adansonii Leaves Are Turning Yellow
Monstera adansonii leaves turning yellow can happen for several distinct reasons, and pinpointing the cause starts with looking at the pattern of the yellowing.
Before you panic, know that a single older leaf turning yellow is completely natural.
But if you’re seeing multiple monstera adansonii leaves turning yellow at once, or if new growth is affected, then something is definitely off.
Here are the most common reasons why monstera adansonii leaves turn yellow, and how to tell which one applies to you.
1. Overwatering Is the Number One Cause
Overwatering is by far the most frequent reason your monstera adansonii leaves are turning yellow.
When the roots sit in soggy soil for too long, they suffocate and begin to rot.
Once root rot sets in, the roots can’t deliver water or nutrients to the leaves, so the leaves start turning yellow from the bottom up.
If your monstera adansonii leaves are turning yellow and feel soft or mushy, overwatering is almost certainly your issue.
Check the soil with your finger, and if it’s wet several inches down, hold off on watering until the top two inches dry out completely.
Also, make sure your pot has drainage holes and that you’re not letting the plant sit in a saucer of water.
2. Underwatering Causes Yellowing Too
On the flip side, underwatering can also make monstera adansonii leaves turn yellow.
When the plant doesn’t get enough water, it can’t photosynthesize properly, and the oldest leaves will start to yellow and crisp up.
The key difference is that underwatered leaves feel dry and papery, not soft.
If your monstera adansonii leaves are turning yellow and the soil is bone dry, then you need to water more frequently.
Give the plant a thorough soak until water runs out of the drainage holes, and then let it dry out partially before watering again.
Your monstera adansonii will bounce back quickly once it gets consistent moisture.
3. Lighting Issues Lead to Yellow Leaves
Lighting problems are another sneaky reason your monstera adansonii leaves are turning yellow.
These plants love bright, indirect light, but too much direct sun will scorch the leaves and cause them to turn yellow or even brown.
On the other hand, if your monstera adansonii is sitting in a dim corner, it won’t get enough energy to stay green, and the leaves will fade to yellow.
If the yellowing is happening on the side of the plant that faces the window, it’s likely sunburn.
If the yellowing is uniform and the plant is leggy, it’s not getting enough light.
Move your monstera adansonii to a spot with bright, filtered light, and you’ll see a huge difference.
4. Nutrient Deficiencies Show Up as Yellowing
A lack of essential nutrients can also cause monstera adansonii leaves to turn yellow.
Nitrogen deficiency is the most common because nitrogen is what keeps leaves green.
If your monstera adansonii leaves are turning yellow starting with the older, lower leaves, while new leaves stay green, it’s probably hungry.
Magnesium and iron deficiencies can also cause yellowing between the veins of the leaves.
You can fix this by feeding your monstera adansonii with a balanced, liquid fertilizer diluted to half strength during the growing season.
Just be careful not to over-fertilize, as too much fertilizer can also burn the roots and cause yellow leaves.
How to Diagnose Why Your Monstera Adansonii Leaves Are Turning Yellow
When your monstera adansonii leaves are turning yellow, a little detective work will tell you exactly what’s wrong.
Start by feeling the soil, checking the leaves, and observing the light conditions.
Here’s a quick breakdown to help you narrow it down.
1. Check the Soil Moisture First
Stick your finger about two inches into the soil.
If it’s wet and the leaves are yellow and limp, it’s overwatering.
If it’s dry and the leaves are yellow and crispy, it’s underwatering.
Adjust your watering schedule based on what you find.
2. Examine the Leaf Pattern
Take a close look at whether the yellowing is on old leaves or new growth.
Old leaves turning yellow usually mean a nutrient issue or natural aging.
New leaves turning yellow usually point to a lighting or watering problem.
If the yellow spots are irregular and scattered, you might be dealing with pests like spider mites, which also stress the plant and cause yellowing.
3. Review Your Environment
Think about recent changes you’ve made.
Did you move the plant? Did the season change?
Cold drafts, sudden temperature swings, and low humidity can all stress your monstera adansonii and cause its leaves to turn yellow.
These tropical plants prefer warm, humid conditions, so keep them away from air vents and heaters.
How to Fix and Prevent Monstera Adansonii Leaves Turning Yellow
Once you’ve figured out why your monstera adansonii leaves are turning yellow, the fix is usually straightforward.
Here’s how to stop the yellowing and keep your plant healthy long-term.
1. Adjust Your Watering Routine
For overwatered plants, let the soil dry out completely before watering again.
If root rot is severe, you may need to repot the plant in fresh, well-draining soil and trim away any mushy, black roots.
For underwatered plants, water more frequently and thoroughly.
The best way to prevent monstera adansonii leaves from turning yellow due to water is to establish a consistent schedule.
Water when the top two inches of soil are dry, and always water deeply.
2. Provide the Right Light
Move your monstera adansonii to a spot that gets bright, indirect sunlight.
A north or east-facing window is ideal.
If you only have a south or west window, pull the plant back a few feet or use a sheer curtain.
Rotate the pot every few weeks so all sides get equal light.
This will stop leaves from turning yellow on the shaded side.
3. Fertilize and Repot When Needed
Feed your monstera adansonii every four to six weeks during spring and summer.
In the fall and winter, cut back on feeding because the plant is resting.
If your plant is root-bound, that can also cause monstera adansonii leaves to turn yellow, so repot into a pot one size larger every couple of years.
Fresh soil also replenishes nutrients, which keeps leaves green and healthy.
So, Why Are Your Monstera Adansonii Leaves Turning Yellow?
Your monstera adansonii leaves are turning yellow because of one of the main stressors we covered: overwatering, underwatering, bad lighting, or a lack of nutrients.
The good news is that you now know exactly what to look for to reverse the problem.
Start by checking your soil moisture, adjust your watering, and make sure the light is just right.
With a little observation and some simple tweaks, your monstera adansonii will stop dropping yellow leaves and start pushing out beautiful, healthy green growth again.
You’ve got this, and your plant will thank you for the extra care.