Summer withered is called nine-leaf Paris, because its flower spikes are mostly nine-section, like a nine-section tower and shaped like a nine-leaf Paris. Summer withered is Prunella vulgaris, also known as Prunella vulgaris, Prunella vulgaris (Yunnan Series), Prunella vulgaris, Prunella vulgaris (Southern Yunnan Materia Medica), Xiju, Naidong (Benjing) and so on. Prunella vulgaris likes warm and humid environment. It can resist cold and has strong adaptability, but sandy loam with sufficient sunshine and good drainage is better. It can also be planted on dry slopes, foothills, forest-side grasslands, roadsides and fields, but it is not suitable for cultivation in low dust and waterlogging areas.