Sophora japonica, also known as Sophora japonica, refers to flowers and buds of leguminous plants in a broad sense, but generally open flowers are called "Sophora japonica" or "Sophora japonica" and buds are called "Sophora japonica". It is often planted near houses and roadsides, and is widely cultivated in China, mainly distributed in the north, mainly in the Loess Plateau and the North China Plain. It usually blooms in April and May every year, and the flowering period is about 10- 15 days.
Temperate tree species like light and dry and cold climate, but they can also grow in South China with high temperature and humidity. Deep well-drained soil, calcareous soil, neutral soil and acidic soil can all grow, but they can't grow well in dry and barren low-lying areas. Resistant to dust and adapt to urban environment. Deep roots, weak germination, medium growth and long life.
Sophora japonica has good ornamental value. As soon as the flowering period arrives, clusters of white Sophora japonica flowers are covered with branches, and the air is filled with a faint and elegant fragrance, which is refreshing. China's ancient poems related to Sophora japonica praise the native species of China, not Sophora japonica or Robinia pseudoacacia, because Sophora japonica was introduced to China from North America in the second half of the19th century. This problem must be clearly analyzed.