The wormwood should be harvested at a good time and picked back at the most vigorous time. This wormwood is more effective than the wormwood picked at other times. During the Dragon Boat Festival, farmers will hang mugwort leaves at home. The wormwood leaves of the Dragon Boat Festival not only symbolize that the countryside can ward off evil spirits, but also are the most prosperous time, with the most beneficial ingredients for human beings.

In the past, all we had to do was pick one and bring it back. Now every farmer who goes up the mountain carries a rope and pulls as much Artemisia as possible before the sun comes out. The more dew, the better. The picked mugwort leaves should be treated first and their roots cut off with scissors. Then put them neatly in the shade where the sun can't be seen at home, let them stand against the wall and turn over every morning or evening.

Ai Cao introduced

Ai Shi has a strong nature, likes sunshine, is drought-resistant and cold-resistant, and has low requirements for soil conditions. The neutral soil with abundant sunshine, deep soil layer, good soil permeability and rich organic matter is the best, and the fertile, loose and well-drained sandy soil and clay loam grow well. In order to save land resources, we should choose wasteland, roadside, river and hillside in hilly areas for reasonable layout, which can be planted on sloping land and flat land, as well as in front of houses and fields.

However, as a medicinal material for both food and medicine, it is more important to ensure the quality, safety and efficacy of raw materials besides obtaining high yield. Therefore, the air around the planting plot should be clean, free of dust, domestic sewage and industrial water pollution, and the air quality should meet the national standard GB 3059-2012+02.