The double lilac blue flowers seem to have one flower inside another flower, making them striking and extra frilly. Flowering during the summer months. Height 90 cm. Spread 60 cm.
The brilliant blue flowers that appear in July and August have a darker centre and resemble cornflowers. Suitable for drying. Height 60 cm. Spread 30 cm
The silver veined dark green foliage is very impressive when it reappears. The stiff steely blue flowerstems and flowers add to its magic in summer. Height 60 cm. Spread 40 cm.
Its delicate violet blue flowers have lacy white veining, making a lovely show. Flowering in mid summer it is a treasured garden rambler. Height 80 cm. Spread 60 cm
The violet-blue flowers have white centres and appear from late spring to November. Rewarding plant, rich flowering and a strong grower. Height 45 cm. Spread 50 cm.
Aromatic grey-green foliage. Dark lavender-blue flowers come in flushes from early Summer. Will continue to Autumn once deadheaded. Height 60cm. Spread 80cm. Drought tolerant.
Bushy, clump-forming. Useful for edging. Loose spikes of soft lavender-blue flowers in July-Aug. Height 45 cm. Position in full sunlight and in well drained soil.