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:
Mahonia eurybracteata 'Narihira'
Osmanthus fragrans 'Apricot Echo'
Osmanthus heterophyllus 'Goshiki'
Osmanthus heterophyllus 'Kaori Hime'
Thujopsis dolobrata 'Jurassic Park'