Large Dieffenbachia 'Sterling'With rich, green leaves that have a stark white stem running through, the Dieffenbachia Sterling is often confused for the similar looking White Stem Aglaonema. The main difference between the two plants is that Dieffenbachia plants have larger leaves and will eventually wind up growing into a slightly larger plant. Nicknamed Dumb Cane, ingesting any part of the plants in the Dieffenbachia family will cause a numbing effect on the mouth and throat.