The line between whether a plant is a "tree" or a "shrub" is sometimes very thin and quite blurry! We use the following criteria to decide which type applies to a certain plant:
Cedrus deodara 'Feelin Blue'
Picea omorika 'Pendula Bruns'
Salix purpurea 'Pendula'
Stachyurus praecox 'Sterling Silver'
Taxus baccata 'Dovastoniana Pendula'