1、 Trunk difference

Poplar is generally 5 to 15 meters high, with white trunk, white or gray bark, rough base and wide crown

The trunk of white birch can be up to 25 meters high, and the bark is white and smooth, like paper, which can be peeled off in layers

2、 Leaf difference

Poplar leaves have irregular tooth buds, petioles as long as or relatively short as leaves, and the surface is covered with white fluff. Single leaves alternate, oval, 4 to 5 cm long. The top of the leaves is sharp, the base is heart-shaped, and the edge has microwave teeth, dark green above and light green below

The leaves of white birch are single and alternate. The edges of the leaves have fine serrations, which are thick paper, and the shape is triangular egg or triangular diamond. The leaves are 3 to 9 cm long and 2 to 7.5 cm wide, with sharp tips and truncated, wide wedge-shaped or wedge-shaped bases