We have found 120 plants that meet your criteria.

Comfrey ‘Symphytum Hidcote Blue’ Blue and white flowers, good ground cover £6.99 Buy
Speedwell ‘Veronica austriaca teucrium Crater Lake Blue’ Ultra-marine flowers £5.99 Buy
Speedwell ‘Veronica Shirley Blue’ Saucer-shaped blue flowers £5.49 Buy
African Lily ‘Agapanthus Black Pantha’ Deep blue, almost black flowers £8.99 Buy
African Lily ‘Agapanthus Headbourne Hybrids’ Showy globes of blue and white flowers £5.99 Buy
African Lily ‘Agapanthus Lavender Haze’ A new, large-headed variety £6.99 Buy
Price Pruned
African Lily ‘Agapanthus Peter Pan’ A compact variety with pale blue flowers NOW £9.99 Buy
Price Pruned
Bugle ‘Ajuga reptans Burgundy Glow’ Multi-coloured evergreen foliage NOW £4.99 Buy
Price Pruned
Bugle ‘Ajuga reptans Catlin's Giant’ Handsome evergreen ground cover NOW £4.99 Buy
Price Pruned
Amsonia ‘Amsonia tabernaemontana’ Dense clusters of ice-blue, star-like flowers NOW £5.99 Buy
Alkanet ‘Anchusa azurea Loddon Royalist’ Intense blue flowers in early summer £5.49 Buy
Price Pruned
Columbine ‘Aquilegia McKana Hybrids’ Bonnet-like flowers in a range of colours NOW £4.99 Buy
Michaelmas Daisy ‘Aster sedifolius nanus’ A small plant that has big impact £5.99 Buy
Price Pruned
Siberian Bugloss (syn. B. macrophylla... ‘Brunnera macrophylla Dawson's White’ An excellent groundcover NOW £8.99 Buy
Price Pruned
Siberian Bugloss ‘Brunnera macrophylla Jack Frost’ large, silvery leaves and frothy blue flowers NOW £7.99 Buy
Price Pruned
Bellflower ‘Campanula carpatica Blaue Clips’ Profusion of blue, bell-like flowers NOW £4.99 Buy
Globe Thistle ‘Echinops bannaticus Taplow Blue’ Spherical, bright blue flower-heads £5.99 Buy
Globe Thistle ‘Echinops ritro Veitch's Blue’ Good for repeat flowering £5.99 Buy
Sea Holly ‘Eryngium bourgatii’ Lovely silver-veined foliage £5.99 Buy
Sea Holly ‘Eryngium bourgatii Picos Amethyst’ New variety with deep blue flowers £7.99 Buy