Plant Care :
The most common problem with growing dumbcane dieffenbachia is too much moisture. Overwatering is a common problem with many houseplants and the dieffenbachia houseplant is no exception. Plant the dumbcane in a well-draining soil and water lightly, keeping the soil consistently moist, but not soggy. Check the soil to make sure it is dry an inch down before watering the dieffenbachia plant.