Topiary Ligustrum Japonicum is also known as Japanese Privet and can be grown as an evergreen tree or shrub - Ligustrum is a very popular choice as a topiary plant and can be trimmed into many different designs - the novelty shaped 3 balls on three stems is easily grown and maintained with a trim a couple of times each year.
Topiary gives an interesting structural shape to the garden - these plants can continue to be grown in containers and do make elegant additions to a doorway but care must be taken to keep these evergreen trees well watered.
Paramount has an extensive Topiary selection - Ligustrum is also for sale as a Half Standard Lollipop Tree