Dieffenbachia Amy, also known as Dumb Cane Amy, shows off medium-green leaves speckled with light green. Splashes of darker green add a fun accent. The Dieffenbachia's common name, Dumb Cane, comes from the fact that the liquid that drips from its leaves can cause a temporary loss of speech if ingested. Due to its toxic juices, this plant is not recommended for homes with small children or pets that chew on your plants.