The acacia tree is tall and its pinnate compound leaves are similar to those of Robinia pseudoacacia. The flowers are light yellow, which can be cooked and eaten, and can also be used as traditional Chinese medicine or dye. The unopened Sophora japonica, commonly known as "Sophora japonica", is a kind of traditional Chinese medicine. Flowering in late summer, different from other tree species, it is an important nectar source plant.

Flowers and pods have the functions of cooling, astringing, stopping bleeding and lowering blood pressure. Leaves and root bark have the effects of clearing away heat and toxic materials, and can be used to treat sores. Wood is used for building. Panicle terminal, often pyramid-shaped, up to 3 cm long;

Pedicel is shorter than calyx; 2 bracteoles, shaped like stipules; Calyx shallow bell-shaped, about 4 mm long, calyx teeth 5, subequal, round or obtuse triangle, grayish white pubescent, calyx tube subglabrous; Corolla is white or light yellow, flowering in June-July and fruiting in August-October.

Extended information:

Transplanting

It is used for greening seedlings, and it will take 3-4 years to leave the nursery. Because the top branches of the seedlings are dense and the spacing is short, the trunk is easily bent. In the spring of next year, the annual seedlings will be transplanted according to the plant spacing of 4-5 cm and the row spacing of 7-8 cm, and the trunk will be 3-5 cm away from the ground after planting.

Because Sophora japonica has germination ability, it is easy to germinate a lot after being cut off. When the sprouting shoots grow to about 2cm, choose one upright strong branch as the trunk and erase all the other branches.

In the future, pay attention to the tillering and lateral removal at any time, and temporarily keep the thin and weak lateral branches at the upper, middle and lower parts of the trunk, which is beneficial to prevent the trunk from bending. In this way, the height of seedlings in the next year can reach more than 3 m.