Light: They appreciate bright light during winter months. During the growing season, the plant prefers dappled shade or indirect light.
Water: During the growing season, they like regular moisture and do not want to dry out. A large dieffenbachia might need to be watered twice a week. In the winter, cut back water.
Soil: Use a fast-draining, well-aerated potting mix.
Temperature: They like above-average warmth. If the temperature drops below 60 degrees, or the plant is exposed to cold drafts, it is likely to lose lower leaves and gain a "palm" effect.
Propagation:There are several possibilities:
* During repotting in the spring, offsets can be divided (leaving some roots intact) and planted in their own pots.
* In older, leggy dieffenbachia, the top can be cut off and potted into fresh potting soil, with a rooting hormone. New leaves will sprout from the stump.
* Pieces of the cane can be sprouted by laying them horizontally in damp potting soil

