OverviewOleander (Nerium oleander) is a common ornamental evergreen shrub. It is used as a freeway median divider in warmer states, such as California. This plant is extremely toxic, and a single leaf may kill an adult. This photograph shows oleander not yet in bloom.
Review Date 10/16/2017
Updated by: Jesse Borke, MD, FACEP, FAAEM, Attending Physician at FDR Medical Services/Millard Fillmore Suburban Hospital, Buffalo, NY. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.