Common name:White Gaura
Botanical name:Gaura lindheimeri

White Gaura is a profusely flowering perennial for all zones; it grows 2'-4' high. It has pink buds that open to showy white flowers in spring and fall. It needs full sun and is drought tolerant. -Cornflower Farms

Common name:Purple Fountain Grass
Botanical name:Pennisetum 'Rubrum'

This grass will reach 6' high and has deciduous, purplish/red leaves with clusters of purple flowers that appear in summer and fall.

Common name:Crape Myrtle
Botanical name:Lagerstroemia indica

The new leaves of this species are 2" long, bright green, and tinged with bronze. Some cultivars have spectacular fall color. When it has a bare outline, its rounded seed capsules add interest. Its delicate flowers bloom in 6"-12" long clusters. The flower colors could be shades of red, rose, pink, purple, and white, blooming in summer. It thrives on heat, and new cultivars have been created that resist mildew. This tree prefers full sun and has low watering needs once it's established.