Posted: 27/06/2013 at 18:13
Hiya. Did you want to put something that might hurt....pyracantha will hurt...or,did you want something simply to block their way?
Is it shady, sunny? Draughty?
For prickly but not too vicious berberis Darwinii is also evergreen with orange/yellow flowers in spring. Will grow in sun or partial shade and is tough.
A camellia in a pot is nice....evergreen and spring flowers. Dittoa rhododendrons. Needs acid soil in your pot though. Choisyas again are evergreen but with scented spring flowers. Phormiums..perfect pot feature. Maybe bit old fashioned now but a conifer in a pot ? Yews and junipers would do well. Or, a collection of ornamental grasses?