There are general patterns to the order of what trees are pluck and when. When talking about the regions, Menghai picks first, then Wu Liang Shan, then Meng La (the 6 ancient mountains). With in each location there are general seasons depending on the type of tree. Plantation tea is the first to be picked, then converted trees, small trees, with old trees picking last. When picking tea the later the better. While you usually want the first bud, the later that bud sprouts in the season the more desirable it is.