What wild weed is "snake-back-away"? Plant one at home to keep snakes away, and it can also treat whooping cough

The weather has been getting hotter and hotter lately, which means summer is coming. Every year when summer arrives, the editor doesn't quite dare to stay at grandma's house in the countryside, because snakes are very active in summer.

At times like this, if you walk around the yard doing this or that, you might get a "surprise" now and then. Later, after telling grandma about it, she dug up a plant like this and planted it at home.

Grandma said this plant is called Chinese knotweed (Persicaria perfoliata), nicknamed "snake-back-away". The meaning of this nickname is that snakes are afraid when they see it, and it will scare snakes away.

This Chinese knotweed (Persicaria perfoliata) is actually also a plant with medicinal value. It has the effects of promoting diuresis, invigorating blood circulation, and reducing swelling, and can be used to treat lung-heat cough, boils and carbuncles, mumps, whooping cough, cold with fever, tonsillitis and other diseases!