Plumbago auriculata is a perennial, evergreen fast growing shrub which is native to South Africa. It has beautiful pale blue flowers. It likes to be in the full sun. You will find that the flowering will be reduced in the partial shade. It only requires a little watering once it is established and is considered moderately drought tolerant.
Figure 1: Plumbago auriculata
We tend to think of Plumbago auriculata as being pale sky blue but it does come in other colours as well. A Plumbago with white flowers is called "Plumbago auriculata var. alba". Here is a photograph I took a couple of days ago.
Figure 2: Plumbago auriculata var. alba
Figure 3: Plumbago auriculata