The Dieffenbachia is only picky when it comes to its location. This cool green plant needs light in order to grow, but is not fond of direct sunlight. Put him in a light place where the sun does not shine directly on its leaves: in front of a window on the north side of your home/office is ideal.
Also make sure it is not directly placed in a draught, he does not like that. The last requirement this green friend has for its home is that it should not get colder than 15 degrees.
The Dieffenbachia does not require much care. In the summer, watering once a week should be sufficient. In winter you can even halve that. If it is close to a radiator, you will have to give water more often in the winter.
Due to its large leaves, it is important that the soil in which it stands remains slightly moist. However, the Dieffenbachia does not love wet feet, so a layer of water at the bottom of the pot is not appreciated.
What the Dieffenbachia will appreciate is a sprinkling or a lukewarm shower from time to time. That reminds him of the Amazon rainforest he came from long ago.
The Dieffenbachia does not really require additional nourishment. If you want to spoil it, it may be good to give it plant nutrition in the summer. This will not be appreciated in the winter, as it will be in relaxation mode.
It's good for the Dieffenbachia to be repotted into a bigger pot with fresh soil once every 2 years. Preferably in the spring. Make sure to wear gloves for safety. The juice of the Dieffenbachia leaf can cause skin irritation. Therefore, you should make sure that children and pets are unable to pull leaves from the plant.