All About Dieffenbachias

Dieffenbachias are a staple to any houseplant hobbyist’s collection. Commonly known as Dumbcane, dieffenbachia contains a toxin in its sap, which can cause drooling and mouth numbness if ingested. It is important to note that while this is a popular houseplant, it is not good to have if you have children or pets! Continue reading to learn all about dieffenbachias!


While dieffenbachias are relatively easy to care for, one thing they do not like is “wet feet.” These houseplants like to be watered thoroughly, with the water properly draining for the pot. Water once the top 1-2 inches of the soil is dry. This will vary depending on the plant and pot size, the type of soil in which they are planted, how much light they are receiving, and the plant’s location in your home. If your plant is over-watered, it will develop yellow leaves.


Like all living things, plants need food! Fertilizing your houseplants should be on your to-do list every 2-4 weeks during the growing season. Jane recommends using Espoma Organic Indoor Fertilizer with a breakdown of 2-2-2.


Dieffenbachias grow best in bright, indirect light. Windows facing the east and west are suitable locations for these houseplants and will provide enough bright, indirect light for this plant to thrive!


Since dieffenbachias are tropicals and originate from Mexico and Brazil, they do not handle temperatures below 55 degrees. It is also important not to place these houseplants near registers, radiators, or vents as they do not like temperature changes.


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