Ajuga reptans (Bugle): Superb ground cover plant with purplish green leaves and blue flower spikes in summer. Very attractive to bees

Ajuga reptans Black Scallop = 'Binblasca' (PBR) (Bugle 'Black Scallop'): Shiny, darkest purple-red leaves look near black. Short spikes of blue flowers in summer.

Geranium 'Alan Mayes' (Cranesbill 'Alan Mayes'): Long flowering geranium with bright blue flowers with purple veining. Clumps of hairy green leaves, turning red in autumn. Hardy. Up to 45cm.

Geranium 'Brookside' (Cranesbill 'Brookside'): A reliable, robust variety with large rich blue flowers over a mound of deeply divided leaves. Height to 45cm. Hardy

Geranium 'Orion' (Cranesbill 'Orion'): A dome of deeply divided foliage, smothered in large blue flowers from early summer onwards

Geranium Rozanne = 'Gerwat' (PBR) (Geranium 'Rozanne'): Noted for its large blue, white centred flowers and very long flowering period. A fine border geranium. Doesn't run. To 30cm. Hardy [Collect Only]

Iris sibirica 'Perry's Blue' (Siberian Iris 'Perry's Blue'): Lovely pale-blue flowers with white markings over strappy green foliage. Prefers moist soil. Makes a bold clump. Hardy. Up to 85cm.

Phlox subulata 'Lilacina' (Moss phlox 'Lilacina'): Pale blue star-like flowers above a cushion of hairy narrow leaves. Good for alpine beds or rockeries. Hardy. Up to 15cm.

Polemonium 'Blue Pearl' (Jacob's Ladder 'Blue Pearl'): Attractive, low-growing form with fresh green ferny foliage and sky-blue bell-like flowers. Hardy. Up to 30cm. [Collect Only]

Polemonium caeruleum Brise d'Anjou = 'Blanjou' (Jacob's Ladder 'Brise d'Anjou'): Variegated polemonium with ferny creamy yellow and green foliage. It has delicate cup-shaped lilac blue flowers in early summer. Hardy. Up to 60cm.

Polemonium reptans 'Touch of Class' (PBR) (Jacob's Ladder 'Touch of Class'): Attractive, low-growing form with variegated ferny foliage and pale-blue bell-like flowers. Hardy. Up to 40cm. [Collect Only]

Veronica gentianoides (Gentian Speedwell): Short spikes of pale-blue flowers above rosettes of evergreen glossy leaves. Good for the edge of a border. Hardy. Up to 45cm.