1) Houttuynia cordata Thunb. It is harvested for food from March to May.
2) If it is mainly used for medicine, only 1 time can be harvested in that year,-10 in September, and twice in the following year, the first time in June and the second time in September-10.
3) If the beverage is processed, the whole grass can be cut flat with a sickle according to the production process requirements, washed and dried, and then stored for later use.