Are the Robinia locust and the Sophora japonica tree the same kind of tree?

The Robinia locust and the Sophora japonica tree are not the same tree. They can be distinguished from the following points

1. Flowering period: Sophora japonica The flowering period of the tree is from July to August every year, while the flowering period of the black locust is between April and May in spring and summer, so the locust tree and the black locust tree can be distinguished according to the flowering period.

2. Leaf shape: The leaves of Sophora japonica are oval and oblong with sharp tips, while the leaves of Robinia pseudoacacia are oval and oval with round or slightly concave tips. Therefore, the leaves can be determined according to the shape of the leaves. The shape distinguishes the locust tree and the thorn tree.

3. Fruit: The fruit of the locust tree is a rosary-shaped pod, while the fruit of the locust tree is a flat pod, so the locust tree and the locust tree can also be distinguished according to the shape of the fruit.

Black locust

Characteristics of Black Locust

1. The Black Locust tree is a deciduous tree, 10 to 25 meters high. Its bark is gray-brown in color, with small branches. It is grey-brown in color, hairy when young and hairless in adulthood, with stipules.

2. The leaflets of black locust are often opposite, oval or oval in shape, with a rounded front end, slightly concave, and a small tip. The base is round to broadly wedge-shaped, with an entire margin. The upper part is green and the lower part is green. Gray green, pubescent when young, then hairless.

Sophora japonica tree

Characteristics of Sophora japonica tree

1. Sophora japonica tree is a tree up to 25 meters high. Its bark is grey-brown with longitudinal fissures. When young, the branches are green, without hairs, and have pinnately compound leaves. The leaf rachis is initially soft hairs. The base of the petiole that falls off immediately after rotation swells. The shape of the leaves wrapping the buds changes, and sometimes they are oval, leaf-shaped, linear, or Drill-shaped, early fall.

2. Sophora japonica has 4-7 pairs of leaflets, nearly alternate, ovate-lanceolate or ovate-oblong, with a pointed front end and a small tip. The base is round or wide wedge-shaped, and the lower part is round or wide wedge-shaped. It is off-white.

Illustration of the difference between locust tree and locust tree

Robin locust

Locust tree