As a food, Polygonum hydropiper is a kind of special food often eaten by ethnic minorities in southern Yunnan. Bulang people in Yunnan like to eat a kind of raw skin, which is pork. These foods are very unacceptable to many people. In this rawhide, the most critical seasoning is Polygonum multiflorum Thunb. Polygonum cuspidatum is a wild herb. Because the Bulang people in Lijiang love Tibet very much, they planted this plant for "pickling raw food". The natural fragrance of Polygonum hydropiper leaves and stems can deodorize and increase the fragrance of live pork.
Polygonum cuspidatum can be used as a herbal medicine, which has the effects of detoxification, detumescence, pain relief and itching relief. But also has the efficacy of invigorating the spleen and nourishing the stomach, so it is often used to treat stomach gas pain, dyspepsia, malnutrition in children and other diseases. In addition, it can also be used to treat rheumatic pain. Generally, people wait for Polygonum hydropiper to bloom before harvesting, then dry it, bundle it and put it aside, and take it out for application when necessary.
Polygonum cuspidatum exists more as ornamental plants such as potted plants in our daily life, and it will be planted in potted flower pots in many areas. Although Polygonum cuspidatum blooms for a long time, we also want to raise a pot. It has a good smell, which many plants don't have. At present, the total number of Polygonum hydropiper in the suburbs is quite large, but you can still see its shadow in some ecological parks or road greening.
Polygonum hydropiper is a very common plant. It has a strong fragrance. For Yunnan people, it is a pure natural spice with a very fragrant taste, which is also lacking in many spices. Therefore, it is often used as a condiment by Yunnan people, and it is also very practical in removing the fishy smell of meat food.