The plumbago plant (Plumbago auriculata), also known as the Cape plumbago or sky flower, is actually a shrub and in its natural surroundings can grow 6 to 10 feet (1-3 m.) tall with a spread of 8 to 10 feet (2-3 m.). It is native to South Africa, and knowing this provides the first clue to how to grow a plumbago, along with where to grow one. Plumbago thrives in the South African heat and in the United States it is found growing year-round in the southernmost parts of Texas and Florida.