Leaves: opposite leaves, oval, whole or obtuse, gray-green, thick texture.
The leaves have concave-convex texture, contain volatile oil, and have a strong fragrance, which can attract bees and butterflies.
Flowers: axillary, dark blue, larger than other salvia flowers.
Flowering: April ~ 65438+February. Distribution: It is native to southern North America and cultivated all over China.
Growth: I like warm and sunny environment, and the area south of the Yangtze River in China can spend the winter in the open air.
Perennial roots are dormant in winter and do not choose soil, but they are not tolerant to waterlogging and are rich in humus.
Sandy soil with good drainage has strong growth adaptability.