There are many things about hanging wormwood. Acorus calamus leaves are usually hung for breakfast on the Dragon Boat Festival, but in some places they are hung a few days before the Dragon Boat Festival.
Usually, wormwood, garlic and calamus are tied into a bundle with red paper and then inserted or hung on the gate. As for the specific dosage of wormwood, there is no hard and fast rule. Generally, one or several mugwort sticks are hung on one side of the gate.
Generally, after a month, when the wormwood dries up and no longer emits fragrance, it will be taken down. Then you can burn it to smoke the room, and the mosquito repellent effect is very good.