Hedge? The grass used for these amazing feathery hedges is Pennisetum alopecuroides Hamelm. Maintenance is easy, the plants are just cut down in spring with shears and then they will grow to acheive their full potention by the end of summer. Wow.
How to Grow Pampas Grass
Olive trees underplanted with lavender (by Sydney, AU designer Peter Fudge via Gardenista)
Combination of white flowers ( annuals?), small shrubs (trimmed) & tree.
Want This Cotton Candy Ornamental Grass (Muhly) - Easy to grow, full sun, 3-4', low maintenance and withstands heat, humidity, poor soil and drought. Blooms late summer to fall.