Oleander plants (Nerium oleander) are among the most versatile of shrubs, with dozens of uses in southern and coastal landscapes. They tolerate a wide range of conditions, including difficult soil, salt spray, high pH, severe pruning, reflected heat from pavements and walls, and drought. But the one thing they can’t withstand is winter temperatures below 20 degrees Fahrenheit (6.66 C.). However, in cooler climates, you can grow an oleander plant in a container and bring it indoors when temperatures drop.
Oleander care is easy, and this makes the shrub popular with highway departments. You’ll often see masses of oleander shrubs planted in highway beautification projects where they provide an outstanding display of long-lasting flowers with very little maintenance.