Spike flower Vitex, verbena family, Vitex shrub. Spike-flowered vitex can reach heights of 2–3 m, with quadrangular twigs and grey fluff. Palmate compound leaves, opposite, small leaves narrow lanceolate. The inflorescences are arranged in a conical shape, with calyx bell shape, corolla blue-purple, and the fruit spherical. The flowering period is from July to August, and the fruit period is from August to October.

Growth habits: light-loving, hardy, heat-tolerant, drought-tolerant, barren-tolerant, strong resistance, salt-alkali-tolerant, pruning-resistant, growing well in loose, fertile, well-drained soil.
Native to Europe, It is suitable for cultivation in North China, Northwest China, Central China, East China, Southwest China and other regions.
Spike-shaped vitex can be planted with evergreen shrubs and are seasonal flowers. Famous for its large blue-purple inflorescence, its elegant blue color is a rare color among plants, and a tree of blue flowers is very elegant in the lush garden. At the same time, its flowers are good honey source plants. Its thorn strips are a good material for weaving crafts.
Blue-purple flowers are rare seasonal flowers in summer, a cluster of blue landscapes, making people refreshed, is a flower landscape, garden, road on both sides of the very excellent configuration of flowers.
The image comes from the Internet.