1. Salvia is panicum miliaceum of Salvia in Labiatae. The stems are erect, the plant height is 30- 100 cm, the plants are tufted and the plants are pilose. The stem is a quadrangular column, and the hairy lower part is slightly lignified. The leaves are opposite, oblong, with obvious green veins, hairless on both sides and glandular spots below. Dense fibrous roots. Terminal racemes, with inflorescences as long as15cm or more; Bracts are small, blue-purple, and wrapped with buds before flowering; Pedicels densely blue-purple pilose. Calyx bell-shaped, blue-purple, with glandular hairs along the outer veins of calyx. Flowering from June to September.

2. Salvia is native to southern Europe and the Mediterranean coast. China is mainly distributed in Zhejiang, southern Anhui, Jiangsu, Jiangxi, Hubei, Fujian, Taiwan Province, Guangdong and Guangxi. Born on hillsides, roadsides, hidden grass, waterside and under trees.

3. Sage is often cultivated as a kitchen herb or medical herb, and can also be used to extract essential oil and make sachets.