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:
Cephalotaxus harringtonia 'Duke Gardens'
Cephalotaxus harringtonia 'Fritz Huber'
Cephalotaxus harringtonia 'Gold Rush' Pick-up ONLY
Chamaecyparis obtusa 'Well's Special'
Cryptomeria japonica 'Globosa Nana'
Picea orientalis 'Skylands'