We have found 12 plants that meet your criteria.

Price Pruned
Granny's Bonnet ‘Aquilegia caerulea’ A cottage garden favourite NOW £4.99 Buy
Crocus Special Offers
Michaelmas Daisy ‘Aster turbinellus’ Sprays of violet blue flowers NOW £5.99 Buy
Globe Thistle ‘Echinops bannaticus Blue Globe’ Large globes of dark blue flowers £5.99 Buy
Siberian Iris ‘Iris sibirica Caesar's Brother’ Intense violet flowers. Great in boggy ground £5.99 Buy
Siberian Flag ‘Iris sibirica Tropic Night’ Violet flowers with yellow throats. Good for boggy ground £5.99 Buy
Russian Sage ‘Perovskia Blue Spire’ Violet-blue flowers and silvery foliage. Great planted en masse £7.99 Buy
Price Pruned
Columbine ‘Aquilegia McKana Hybrids’ Bonnet-like flowers in a range of colours NOW £4.99 Buy
Globe Thistle ‘Echinops ritro Veitch's Blue’ Good for repeat flowering £5.99 Buy
Bearded Iris ‘Iris Jane Phillips’ A popular variety with blue flowers £6.99 Buy
Siberian Iris ‘Iris sibirica Flight of the Butterflies’ Pretty violet-blue flowers £5.99 Buy
Russian Sage ‘Perovskia abrotanoides’ Silvery white aromatic foliage with long lasting blue flowers £7.99 Buy
Price Pruned
Russian Sage ‘Perovskia atriplicifolia Little Spire’ A shorter form of the popular Russian sage NOW £7.99 Buy