What season is the best for Dunhuang apocynum venetum?

Apocynum venetum was the best in June+10, 5438, because new apocynum venetum tea was listed in June+10, 5438, and July-September was the hottest time in Dunhuang. This kind of plant has the strongest transpiration, and all medicinal components are on the top of branches and tender leaves, which has the highest medicinal value. After picking, it will be listed in June 5438+ 10, so it will be June 5438+ 10.