Delphinium grandiflorum

Delphinium grandiflorum is a species of Delphinium known by the common names Siberian larkspur and Chinese delphinium. It is native to Russia and China. There are several popular cultivars in several colours which are grown as ornamental plants, including 'Blue Butterfly', 'Summer Morning', 'Blue Mirror', and 'Summer Stars'. Like many other larkspurs, this plant is poisonous. It is much shorter and more compact than the more familiar tall D. elatum, with dispersed flowers, rather than single spikes. It is a short-lived perennial that is suggested to be treated like an annual in many cases due to its unpredictability in terms of returning the next season. It readily provides seed pods for reseeding, although allowing it to go to seed hastens the end of its flowering. This species is commonly considered to have the most intense blue flowers of all species in its genus, although that depends on the particular variety, the particular plant, the freshness of the blossom, and the growing con......read more on Wikipedia.