Public gardens are building more towers of flowers using bedding plants like Busy Lizzy.

Your Own Edifice
On a small scale you can grow mound for pounds by buying mini plugs.
Build a shape using chicken wire or proper units and incorporate containers at varying levels.
Instal a watering or irrigation method as you build.

Plants to Use
Busy Lizzie are a great start as the have a loose habit and will flower in some shade and that will be important if the structure is 360 degrees around
Trailing petunias will aslo do well at covering the structure quickly.
Tyrolean window boxes should also provide the idea of using red trailing geraniums

Thompson Morgan supplied the photograph and have an advisory service for those interested in the ‘Maxi Tower’ large structure.