The leaves of delphiniums are deeply lobed with 3-7 toothed, pointed lobes. The main flowering stem is upright, and can be up to 1.5m tall. Each spike contains many flowers, varying between purple, blue, lavendar, pink or white. The plants flower from late spring to late summer, and are pollinated by butterflies and bumble bees.
Many species are cultivated as garden plants, with numerous cultivars having been selected for their denser, more prominent flowers. Pacific Giants being one of the most popular varieties.
Delphiniums like a deep rich well drained soil in a sunny position with some shelter. Make sure you protect them from slugs and snails.
All parts of the plant contain an alkaloid delphinine and are poisonous. In small amounts, extracts of the plant have been used in herbal medicine.