Bitter greens are neither dandelions nor purple flowers. They cannot be confused with each other. There are many kinds of bitter greens, but not many with purple flowers. Generally, bitter herbs from trees must be weathered by wind and frost before they can be used by humans. However, bitter herbs from the mountains cannot be used because they are often covered by other plants and cannot fully withstand the frost of nature, so it is useless.

Bitter greens tea is usually picked when the bitter greens on the tree bloom before the wheat harvest. Generally, they are useless when they bloom. The bitter greens on the bushes are used for conditioning and are usually picked when they are seedlings or strong seedlings. The bitter herbs picked at this time have many functions and functions. They should be dried directly in the sun. They are all extended from the treatment of cholecystitis, such as lowering blood pressure. In the past, it was often used to satisfy hunger. Especially in famine years, it was used to save lives. Shurong bitter herbs are also very particular when used. Even when they are used to satisfy hunger, the bitter core in the middle is often removed. Remove it so that you don't feel bitter. It is not recommended to eat more bitter vegetables alone. However, when it is used to regulate the stomach or for maintenance, it is necessary to add brown sugar. There is a bit of skill in using it. The brown sugar is added after cooking, not during the cooking process. Otherwise, it will be difficult to bring out the efficacy and role of Shu Rong Ku Cai.

Sophora arborescens is an annual herb or slightly semi-shrub, and the plant has a bitter aroma. The leaves are thick and papery, covered with gray-white pubescence, and the corolla is purple. The flowering and fruiting period is from April to July. It grows in plains, hills, understory, grassland, wasteland, fields, riversides, roadsides, etc. The whole plant can be used as medicine, and has the effects of warming the menstruation, removing dampness, dispersing cold, stopping bleeding, anti-inflammatory, and anti-allergic effects. The leaves are dried and mashed into "bitter velvet". Distributed in Guannan area in the northeastern coastal area of ??Jiangsu Province, my country.

Guannan’s unique ecological environment is conducive to the growth of Sophora sibiricum. The soil requirements of Sophora sibiricum are not high. Guannan’s unique soil combines a variety of trace elements from sea and land, and the soil is aerated. It has good water permeability and suitable content of organic matter, phosphorus, boron, manganese, etc. The Sophora sibiricum produced on this land is rich in trace elements. Most of the high-quality Shurong bitter vegetable tea is produced here. The four distinct seasons and the good ecological environment with pleasant climate provide unique conditions for the growth of natural wild sowroot. It is an important producing area of ??green pure sowroot.