These handsome perennials form strong clumps, the erect stems carrying attractive umbels of sky-blue flowers. Gives a wonderful show of large flowers in mid to late summer.
Suited to most soils in full sun; keep moist but well drained. Dwarf variety, height to 55 cm. Attractive to insects.
Plant in the garden or grow as a feature in a patio pot. Apply liquid feed monthly from spring to flowering.
Clump forming perennial to enjoy year after year. Semi-hardy and evergreen; mulch in winter or move container to protected position.
Propagate by division in spring. Excellent for cut flowers.