Dieffenbachia Leaves Turning Brown: Causes & Fixes

Who wouldn’t like a house or a room full of beautiful green plants that would definitely enhance the whole look of your living place and not just that. They can serve so many other purposes. Let’s see! They can clean the ear, and keep the air fresh so you won’t need any air refresher in your room if your room is a living place of plants.

Another very important thing that plants can do, is that they can be the most beautiful background for your pictures! What?! I know it sounds stupid and somewhat silly, but where social media is standing now, it is quite important to represent ourselves there in the best way possible, and plants can help with it.

What else are plants good for? They make the best companionship. Yes, plants adore when someone talks to them, and that’s one of the reasons why they thrive faster than usual. You can give to your plant all the necessary needs, but if you don’t give to it your love and compassion, that plant will die faster than usual.

In this article, I’m going to talk about a very beautiful house indoor plant, and I’m referring to dieffenbachia.

I have written another article related to dieffenbachia, where I have included a part about what dieffenbachia represents, thus I’m going to skip that part in this article, and go straight to the main topic. 

So, as I mentioned above, plants die way faster if you don’t deliver to them their specific and unique needs. They often manifest their unhappiness by going dry or by changing the color of their leaves. 

This article will be dedicated to the plant dieffenbachia and its leaves turning brown. First I’ll include the causes of that issue and then I’m going to provide you will a few preventive measures that you can undertake in order to make sure that your dieffenbachia stays healthy. 

Let’s just start without wasting any more time! 

Dieffenbachia Leaves Turning Brown – What Might Be The Cause?


The most frequent reason for dieffenbachia leaf browning is overwatering. This is probably the reason if you give your houseplants too much care. A soil that has been overwatered will remain wet or waterlogged for a long time. As a result, the root system receives little ventilation.

Soggy soil will suffocate your dieffenbachia. In order for your plant to operate properly, it has to take in oxygen, and roots are crucial to this process.

When the roots are harmed by overwatering, photosynthesis, cell development, and other functions in your plant are affected. The leaves begin to brown widely yet gradually as a result.

The roots of the plants will be more susceptible to bacterial and fungal infections if the issue of overwatering is not addressed. Rot can also progress up the stems and foliage, darkening or browning them in the process.

In spite of your best attempts to maintain your dieffenbachia well-watered, the leaves may be yellowing and withering because of overwatering. Feeling the soil will reveal an overwatered dieffenbachia.


Dieffenbachia plants require indirect bright light even if they can withstand shade. Nevertheless, because dieffenbachia leaves are susceptible to drying out and scorching from the sun, extended exposure to direct sunlight might be harmful to your plant.

Large brown stains or places that have been sunburned will show up on the leaves. Due to severe scorching, the entire leaf will turn brown if the issue is not resolved.

The excessive dehydration and browning of the foliage are some signs that your dieffenbachia needs more water.

Too Much Fertilizer

The most frequent reason of browning and curling dieffenbachia leaf edges is leaf burn brought on by an excess of fertilizer. Leaching the pot to remove extra fertilizer salts will help you correct overfertilizing. Completely rinse the soil with fresh water, let it drain for about 30 minutes, and then do it again.

Resuming a regular feeding schedule after two weeks will help to avoid the problem from recurring. Feed your indoor plants with a balanced houseplant fertilizer once every two weeks from spring through summer. During the fall and winter, cut back on feeding to once a month.

When it comes to fertilizers, I’m not a expert, but I can suggest you a fertilizer for your dieffenbachia, and that is Jack’s Houseplant Special. It is designed with a micronutrient ratio that will result in robust roots and a green canopy. As opposed to certain other products on the market, it won’t accumulate in the root zone and result in fertilizer burn.

Dieffenbachia Leaves Turning Brown – Preventive Measures 

Proper Watering

Early detection is key to preventing root rot and saving your dieffenbachia. Before you start watering again, let the potting soil’s top two inches completely dry out. Make sure your dieffenbachia is replanted in a container that is the right size and that the potting mix and container are both well-draining.

Proper Light

To prevent sunburn, don’t expose your dieffenbachia to the sun for longer than two hours per day. Your dieffenbachia should, ideally, be exposed to sunshine for at least six hours each day.

Proper Humidity

Monitoring the humidity levels in your house and around your dieffenbachia is something I’d advise. I advise maintaining a humidity level around your dieffenbachia of at least 40% all year round.

Closing Words

I think I have said anything that I needed to say. I just hope that you will find this article helpful and that you will manage to keep your dieffenbachia healthy.

Further Reading

You know that I never stop, and you can’t expect for me to stop this time, either, and I advice you to do so, as well. Don’t stop reading my content.

I suggest you keep reading about dieffenbachia, so you can read the causes of dieffenbachia turning its leaves yellow. 

If you are into vegetables like me, and if you are a big fan of onions like me, then I suggest you find out how often you have to water onions.

But, on the other hand, if you don’t want to see any onion grass in your yard, then you should find out how to kill onion grass. 

Ella Holmes

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