We have found 64 plants that meet your criteria.

lesser periwinkle (syn. 'Bowles Variety')
Vinca minor 'La Grave' lesser periwinkle (syn. 'Bowles Variety')... Gorgeous lavender-blue blooms £8.99 Buy
New
lesser periwinkle
Vinca minor 'La Grave' lesser periwinkle Gorgeous lavender-blue blooms £5.99 Buy
sweet violet
Viola odorata sweet violet Sweetly scented, edible flowers £2.49 Buy
sweet violet
Viola odorata sweet violet Sweetly fragrant flowers £6.99 Buy
New
violet
Viola odorata 'Hungarian Beauty' violet A pale-flowered version of the classic violet £5.99 Buy
heartsease
Viola tricolor heartsease A pretty short-lived perennial £1.99 Buy
African lily
Agapanthus 'Northern Star' (PBR) African lily One of the hardier agapanthus £9.99 Buy
New
lavender
Lavandula angustifolia Melissa Lilac ('Dow4') (PBR) lavender Large, lilac flowers in... £4.99 Buy
New
Purple Sage
Salvia officinalis 'Purpurascens' Purple Sage Attractive red-purple young leaves £4.99 Buy
Chilean potato tree
Solanum crispum 'Glasnevin' Chilean potato tree Clusters of purple flowers £11.99 Buy
Crocus Special Offers
bluebell creeper
Sollya heterophylla bluebell creeper Clusters sky-blue flowers NOW £9.99 Buy
Crocus Special Offers
mullein
Verbascum 'Blue Lagoon' mullein A brand new, award-winning variety NOW £7.49 Buy
African lily
Agapanthus 'Castle of Mey' African lily A tall, rich blue form £9.99 coming soon
African lily
Agapanthus 'Taw Valley' African lily Deep blue flowerheads £9.99 coming soon
African lily
Agapanthus 'Taw Valley' African lily A spectacular summer-flowering perennial £6.99 coming soon
bugle
Ajuga reptans 'Atropurpurea' bugle Excellent groundcover for shade £6.99 coming soon
giant sea holly
Eryngium giganteum 'Silver Ghost' giant sea holly Stunning silvery white bracts £9.99 coming soon
New
Iris sibirica 'Valda' siberian iris Luscious red-purple flowers £9.99 coming soon
Phlox
Phlox divaricata 'Clouds of Perfume' Phlox Exquisite pale blue flowers £7.99 coming soon
greater periwinkle
Vinca major greater periwinkle Elegant blue-violet flowers £8.99 coming soon