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Dumb Cane plant- Dieffenbachia

The Dumb Cane plant, scientifically known as Dieffenbachia, is a beautiful and popular indoor plant that is loved for its lush foliage and ease of care. Its common name comes from the plant containing a toxic sap that can cause temporary speechlessness when ingested. However, when taken care of properly, this plant is completely safe and will add beauty to any room in your home or office. 

Leafy Dieffenbachia in a white indoor pot.

General Care


This plant thrives in bright, indirect light - direct sunlight can scorch its leaves. The plant can become leggy in a dimly lit room, and the leaves may turn yellow and drop.


The Dumb Cane plant prefers to be kept moist but not overly wet. It is best to allow the top inch of soil to dry out before watering. Overwatering can lead to root rot, so it is crucial to avoid this. When the plant is in a dormant phase in the winter months, it will require less water.


This lush beauty thrives in high humidity. If the air in your home or office is dry, you can increase the humidity around the plant by misting it with a spray bottle or placing a humidifier nearby. Alternatively, you can place the plant on a tray of pebbles filled with water, ensuring the pot does not sit in the water


Prefers a well-draining and nutrient-rich soil. It is best to use a potting mix that contains peat moss, perlite, and vermiculite. These ingredients will provide good drainage while also retaining moisture.

Lime green coloured Dumb Cane Plant.

Common Problems and Solutions

One common problem with the Dumb Cane plant is yellowing leaves. This can be caused by several factors, including overwatering, underwatering, too much direct sunlight, or pest infestations. To fix this, make sure you are watering the plant properly, move it to a spot with less direct sunlight, and inspect it for pests.

Finally, the Dumb Cane plant can attract pests such as spider mites and mealybugs. To prevent and treat these pests, regularly inspect the plant for signs of infestation, and treat it with insecticidal soap or neem oil.