We have found 35 plants that meet your criteria.

African Lily ‘Agapanthus africanus’ Globes of blue flowers in late summer £5.99 Buy
Globe Thistle ‘Echinops bannaticus Blue Globe’ Large globes of dark blue flowers £5.99 Buy
Globe Thistle ‘Echinops ritro Veitch's Blue’ Good for repeat flowering £5.99 Buy
Cranesbill ‘Geranium Brookside’ Deep blue flowers and long flowering seasons £5.99 Buy
Cranesbill ‘Geranium himalayense Gravetye’ Large, purple-blue flowers with reddish centres £5.99 Buy
Cranesbill ‘Geranium Johnson's Blue’ Elegant blue flowers, good for groundcover £4.99 Buy
Cranesbill ‘Geranium Philippe Vapelle’ A mass of light sky-blue flowers in June and July £5.99 Buy
Meadow Cranesbill ‘Geranium pratense Mrs Kendall Clark’ Plenty of charming first rate flowers £5.99 Buy
Cranesbill ‘Geranium Spinners’ Wonderful large deep purple blue blooms £5.99 Buy
Cranesbill ‘Geranium wallichianum Buxton's Variety’ Late flowering, with soft, blue-mauve flowers £6.99 Buy
Crocus Special Offers
Cranesbill ‘Geranium x magnificum Rosemoor’ Glorious violet-purple flowers NOW £3.99 Buy
Bearded Iris ‘Iris Fort Apache’ Luscious maroon blooms £6.99 Buy
Siberian Iris ‘Iris sibirica Caesar's Brother’ Intense violet flowers. Great in boggy ground £5.99 Buy
Siberian Flag ‘Iris sibirica Perry's Blue’ Looks great planted in bold clumps £5.99 Buy
Siberian Flag ‘Iris sibirica Tropic Night’ Violet flowers with yellow throats. Good for boggy ground £5.99 Buy
Price Pruned
Lavender ‘Lavandula angustifolia Munstead’ A compact variety with blue-purple flowers NOW £5.49 Buy
African Lily ‘Agapanthus Black Pantha’ Deep blue, almost black flowers £8.99 Buy
African Lily ‘Agapanthus Glen Avon’ Magnificent new variety £6.99 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