Pure Green™ Dieffenbachia Foliage. The dieffenbachia, which is also known as leopard lily can grow to be 6 feet tall. This plant was discovered by a gardener named Dieffenbach in 1830. A Pure Green™ product. Visit website on reverse. John Henry. Junior Portrait. Hendriks. Dieffenbachia. Dieffenbachia Maculata. www.hendriksgreenhouses.com. ©2005.