The florescence of Sophora japonica is generally in April and may every year, and the florescence is generally about 10 to 15 days. Sophora flower, also known as Acacia flower, is widely planted in all parts of China. It has a very good ornamental value. When the flowering period comes, the white sophora flower will be covered with branches and the air will be filled with a light and elegant fragrance.
Sophora trees are about 8 to 20 meters tall and have grayish brown bark. Leaves alternate, 15 to 25 cm long, base inflated, leaflets 7 to 15, petioles about 2 mm long, leaflets oval oblong, about 2.5 to 7.5 cm long, and about 1.5 to 3 cm wide. Panicles terminal, 15 to 30 cm long, corolla butterfly shaped, milky white, flag shaped broad heart.