We have found 65 plants that meet your criteria.

bugle
Ajuga reptans 'Catlin's Giant' bugle Handsome evergreen ground cover £6.99 Buy
alkanet
Anchusa azurea 'Dropmore' alkanet Vibrant blue, edible flowers £2.49 Buy
michalmas daisy
Aster × frikartii 'Mönch' michalmas daisy Lavender-blue, daisy flowers £7.99 Buy
aster
Aster 'Little Carlow' (cordifolius hybrid) aster Pretty violet-blue daisies in late summer £7.99 Buy
butterfly bush
Buddleja 'Lochinch' butterfly bush Fragrant violet-blue flowers all summer £8.99 Buy
creeping blueblossom
Ceanothus thyrsiflorus var. repens creeping blueblossom A low-growing evergreen with blue flowers £10.99 Buy
Californian lilac
Ceanothus thyrsiflorus 'Skylark' Californian lilac A haze of bright blue flowers in early summer £12.99 Buy
Californian lilac
Ceanothus 'Autumnal Blue' Californian lilac Sky-blue flowers in late summer £12.99 Buy
Californian lilac
Ceanothus 'Burkwoodii' Californian lilac Bright blue flowers in summer £12.99 Buy
Californian lilac
Ceanothus 'Puget Blue' Californian lilac Fabulous deep blue flowers £12.99 Buy
viper's bugloss
Echium vulgare 'Blue Bedder' viper's bugloss Loved by bees and other pollinating insects £2.49 Buy
sea holly
Eryngium agavifolium sea holly Striking foliage £7.99 Buy
sea holly
Eryngium bourgatii 'Picos Amethyst' sea holly New variety with deep blue flowers £8.49 Buy
button eryngo
Eryngium yuccifolium button eryngo Distinctive strap-shaped foliage £6.99 Buy
catmint
Nepeta × faassenii catmint Loose drifts of lavender flowers. Great for edging £7.99 Buy
Crocus Special Offers
catmint
Nepeta grandiflora 'Bramdean' catmint Indigo-blue flowers NOW £7.99 Buy
catmint
Nepeta subsessilis 'Washfield' catmint Pretty catmint with bright blue flowers £6.99 Buy
catmint
Nepeta 'Six Hills Giant' catmint A hardy catmint with lavender flowers £7.99 Buy
beard tongue
Penstemon 'Alice Hindley' beard tongue A very old variety £6.99 Buy
Russian sage
Perovskia 'Blue Spire' Russian sage Violet-blue flowers and silvery foliage. Great planted en masse £9.99 Buy