Delphinium
Genus of about 250 species of annuals, biennials, and perennials found mainly in mountainous areas worldwide, except Australia and the polar regions.

They are grown for their spikes, racemes, or occasionally panicles of shallowly cup-shaped, sometimes hooded, spurred, single to fully double flowers, often known as "florets". Most have fibrous or fleshy roots, although some are tuberous. The basal leaves, mostly to 20cm (8jn) long, are toothed and deeply or shallowly 3- to 5-lobed, occasionally 7-lobed. Grow tall delphiniums in a mixed border or island bed, and dwarf ones in a rock garden.

Source: The Royal Horticultural Society "A-Z Encyclopedia of Garden Plants, A-J", page 360

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