Dieffenbachia Leaves Turning Yellow: Causes & Fixes

The plant that I’m going to mention the most in this article is the first poisonous plant to both, humans and animals. I’m referring to dieffenbachia.

Because this plant is dangerous, it should not be kept around children or pets. The bitter sap of the plant, when consumed, can paralyze the vocal cords and numb the throat, leaving the victim speechless for up to two weeks until the poison wears off.

Any contact with the plant that results in sap exposure should be properly cleaned because the sap is extremely irritative to the skin.

Dieffenbachia – What Does It Represent?

The pointy, ovate leaves of dieffenbachias come in a variety of shades of green, cream, and white. A large, healthy dieffenbachia can grow to be 10 feet tall and have leaves that are 20 inches long.

However, under normal indoor conditions, where a height of 3 to 5 feet is more typical, the plants rarely grow to this extent. If given enough light, dieffenbachia, a plant that grows quickly, can reach a height of 2 feet in just a year after being planted as a rooted cutting.

Although the phrase “dump cane” has lost favor as a derisive nickname, it was given to the plant because it is extremely harmful to people, dogs, and cats.

There are several lovely tropical perennials in the Dieffenbachia genus, but D. sequine, D. oerstedii, D. maculata, and D. amoena are the most often cultivated species.

You can have difficulty over the specific nomenclature of several types of Dieffenbachia because several of the species have lately been given new names. They are commonly referred to as dieffenbachias or dumb canes as a group.

Dieffenbachia Leaves Turning Yellow – What Might Be The Cause?

Insufficient Sunlight

A houseplant does not receive the same amount of sunlight throughout the day as plants in your garden, even if it is exposed to bright indirect light. A plant leaf can become yellow and droop if it is exposed to too much sunlight. All of the leaves will turn yellow before you know it.

It is recommended to move your plant to the window sill, where it may receive direct sunshine during the day, if it is currently situated in the middle of the room away from a light source. Once it is on the sill, see whether anything is obstructing the light. You can provide additional artificial light during the winter to prevent the coloration of your plants’ leaves.


The weather is another typical explanation for why your dump cane houseplant can be turning yellow. Houseplants love warm temperatures, and their leaves become damaged if it is really cold. Place your houseplant where it receives bright light but isn’t too cold or drafty if it spends the winter on a window ledge or close to an air conditioner.


An infection may also cause yellow spots on the leaves. In addition to turning the leaves yellow, an infection will also change the color of the blossoms and distort the stem.

It is recommended to relocate the plant container away from other plants or replace the pot totally if the infection has spread throughout the entire plant. Before using the tools on other plants, make careful to clean them and remove any yellowed leaves.

Nutrient Deficiency

Since you might not even be aware that this is happening, this one might be a little challenging to solve. If your stupid cane plant is not receiving enough nutrients, particularly nitrogen, it may be changing color. You stop the leaves from becoming yellow, make sure to treat your plants on a regular basis with a diluted houseplant fertilizer.


Due to its extended lifespan, dieffenbachia is one of the most common indoor plants. But it eventually begins to age, just like everything else that is alive.

The green leaves change to yellow leaves; this is a perfectly normal process. The leaves will eventually just fall off when the time comes. Trimming the stems and cutting back the foliage to encourage new growth after all the leaves have fallen is a good idea.

Dieffenbachia Leaves Turning Yellow – How Can You Prevent It?

Proper Watering

Frequent overwatering will be harmful to Dieffenbachia. For optimal results, give the plant a good soak in water, then let it sit until the top layer of potting soil feels completely dry. Sometimes this approach is referred to as “drench then dry.”

Dieffenbachia should never be allowed to saturate with water. The effects of excessive watering on leaves include yellowing, drooping, and eventually complete shedding. In soggy plants, root rot will also be an issue. To avoid standing water, make sure your pot has a drainage hole in the bottom.

Proper Sunlight

The plant grows best in direct, bright light, but it can also survive and develop in darker regions of your house. The leaves of the plant will burn if you place it in full or direct sunlight.

Move your dieffenbachia to a north or east-facing window if you believe it is receiving too much sun. Alternately, you might relocate it a few feet away from the window to block part of the light if necessary.

Pests Free Plant

To stop the infestation from spreading to other houseplants, isolate your plant if it is infected. The severity of the issue and the type of pest will determine the course of treatment. Use an insecticidal soap as directed by the manufacturer to get rid of the pests for the best results.

If treatment fails to eradicate the infestation, you could in rare instances have to entirely destroy the plant.

Closing Words

Just by following the above-mentioned tips you can safe your plant from creating yellow leaves and eventually dying. I really hope you will find this article helpful.

Further Reading

Homework is here! You thought I forgot, right? You are wrong, I didn’t?

So, if you are into vegetables, you can read something more about the proper way to water an eggplant. 

One other article that you will find interesting is the one about killing crabgrass and having a green beautiful yard free of crabgrass.

Furthermore, check this article about how to kill mushrooms in a yard, but check first if they are poisonous, cause if they aren’t you might as well cook them.

Aurora Hansen

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