Hydrangea paniculata Limelight, large white blooms tinged with pale green; trailing Ivy at the base spills over the sides of the classy zinc planter boxes. Baltic Ivy (variegated creamy edge) would combine well too.
Aechmea 'Dean' and Dichondra 'silver Falls' in large containers in reflecting pool at Chanticleer Gardens. Design by Chanticleer horticulturist Dan Benarcik. Photo by Chanticleer photographer Lisa Roper.
An example of using containers to create a typical hedge. Instead of plantings these boxwood straight in the ground, they are higher up to block views, and can be moved if necessary. - Gardening For Life