1、 Blade difference

The leaves of Buxus japonicus are thin leathery, usually spoon shaped, obovate or narrow ovate, the widest above the middle, about 2-4 cm long and about 8-18 mm wide. The leaf surface is green and bright, and the back is gray

The leaves of boxwood with melon seeds are leathery, oblong, broad obovate, broad oval or oval, about 1.5-3.5cm long and 0.8-2cm wide

2、 Shape difference

Buxus japonicus is a shrub plant, about 3-4 meters high. The branches are cylindrical, and the branches with small points are quadrangular. They are pubescent in the initial stage and will fall off to be hairless in the later stage

Boxwood with melon seeds is a small tree or shrub, about 1-6 meters high. The branches are also cylindrical, gray white in color. The small branches and leaves are quadrangular, but they will have short pubescence or no hair on opposite sides