An oleander bush is a flowering evergreen that grows in the warm climates of the West Coast region, Florida and Texas. The oleander also tolerates the dry and windy conditions found in Arizona and the salty marsh soils in coastal areas.
Oleanders produce flowers during the summer and into the fall, with colors ranging from apricot and purple to white and yellow. All parts of the oleander bush are poisonous to humans and animals if swallowed, and some people with sensitive skin react to the sap. Although oleander bushes are resilient in various climates, they fail to grow during winters when temperatures fall below 20 degrees Fahrenheit; however, they grow well indoors in containers during this season.