Sandwiched between such well-known rockery plants as Campanula andin this A-Z guide is the little-known Cyananthus. It is a low-growing, blue-flowering alpine closely related to Campanula, although it usually bears funnel-shaped blooms rather than bells or stars. Cyananthus is well worth growing if you have a moist but free-draining spot to fill with a compact plant.
VARIETIES: The best species to pick is C. microphyllus, as it is the one most likely to survive the winter. Basic details are height 3 in., spread 1 ft.
Flowering period: August-September – the pale purpleare about 1 in. across. C. lobatus is another prostrate species with erect funnel-shaped flowers but the colour is bright blue and the petals are wider.
SITE AND SOIL: Requires well-drained, humus-rich soil – thrives in sun or light shade.
PROPAGATION: Sowunder glass in spring or plant basal in a cold frame in late spring.