We have found 15 plants that meet your criteria.

Price Pruned
Vinca major Greater Periwinkle Elegant blue-violet flowers NOW £4.99 Buy
Price Pruned
Lavandula angustifolia 'Munstead' Lavender A compact variety with blue-purple flowers NOW £4.99 Buy
Vinca minor Lesser Periwinkle Superb ground cover £5.99 Buy
Vinca minor 'Argenteovariegata' Lesser Periwinkle Creamy-white leaves £5.99 Buy
Price Pruned
Vinca minor 'Illumination' Periwinkle Brand new introduction NOW £5.99 Buy
Vinca minor 'La Grave' Lesser Periwinkle syn. V. minor... Gorgeous lavender-blue blooms £5.99 Buy
Rosmarinus officinalis 'Miss Jessopp's Upright' Rosemary Lavender-blue flowers £5.99 Buy
Vinca major 'Variegata' Greater Periwinkle Large, bright blue flowers £5.99 Buy
Ceanothus 'Concha' Californian Lilac Masses of deep blue flowers in spring £6.99 Buy
Ceanothus 'Puget Blue' Californian Lilac Fabulous deep blue flowers £6.99 Buy
Ceanothus 'Autumnal Blue' Californian Lilac Sky-blue flowers in late summer £7.99 Buy
Ceanothus 'Burkwoodii' Californian Lilac Bright blue flowers in summer £8.99 Buy
Ceanothus thyrsiflorus var. 'repens' Creeping Blueblossom A low-growing evergreen with blue flowers £8.99 Buy
Ceanothus thyrsiflorus 'Skylark' Californian Lilac A haze of bright blue flowers in early summer £8.99 Buy
Price Pruned
Rhododendron 'Blue Diamond Group' Dwarf Rhododendron Vivid violet flowers NOW £10.99 Buy