A vigorous grower, this plant will fill crevices and cracks in the pavement, thus creating the established feel to the garden. Bright violet star-shaped flowers in summer. Height 15 cm. Spread 60 cm.
The star-shaped blue flowers arrive from late spring to summer. Evergreen and very suitable for groundcover in smaller patches, tubs and pots. Height 20 cm. Spread 60 cm.
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
A well known plant from olden days. Ideally put at the back of a border, where its dark blue flower spikes with their white centres will be spectacular. Needs some support. Height 150 cm. Spread 60 cm.
Often grown as an architectural plant for its shapely leaves, the dark blue flowerheads in summer will attract many butterflies and bees to your border, Height 100 cm. Spread 45 cm.
To add an exotic touch to the garden, this plant will produce a magnificent tall, blue flower spikes every second year over silver green foliage. Spikes up to 400 cm. Can be very irritant to the skin.
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 true blue flowers combine well with its dark purple foliage in summer. Good for cottage style garden, container or border. Disease resistant plant. Height 30 cm. Spread 25 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.
