We have found 320 plants that meet your criteria.

butterfly bush (syn Buddleja Flower Power )
Buddleja × weyeriana 'Bicolor' butterfly bush (syn Buddleja Flower... Striking bi-coloured flowers £12.99 Buy
butterfly bush
Buddleja lindleyana butterfly bush Ideal for training against a warm, sheltered wall £12.99 Buy
clustered bellflower
Campanula glomerata 'Superba' clustered bellflower Rich purple flowers in June £6.99 Buy
milky bellflower
Campanula lactiflora 'Loddon Anna' milky bellflower Soft lilac flowers on tall stems £6.99 Buy
dalmatian bellflower
Campanula portenschlagiana dalmatian bellflower Vigorous and low-growing £6.99 Buy
New
harebell
Campanula rotundifolia harebell Very pretty in a meadow £2.49 Buy
New
Campanula sarmatica 'Hemelstraling' bellflower Elegant, upright flowerspikes £5.99 Buy
New
greater knapweed
Centaurea scabiosa greater knapweed Wonderful in naturalised planting schemes £2.49 Buy
New
knapweed
Centaurea 'Jordy' knapweed Intense, near-black flowers £5.99 Buy
valerian
Centranthus lecoqii valerian Long-lasting flowers are very rich in nectar £7.99 Buy
New
valerian
Centranthus lecoqii valerian Long-lasting flowers are very rich in nectar £5.99 Buy
clematis (group 2)
Clematis Crystal Fountain ('Evipo038') (PBR) clematis (group 2) Unusual lavender flowers £12.99 Buy
clematis (group 3)
Clematis 'Étoile Violette' clematis (group 3) Produces masses of deep purple blooms £12.99 Buy
herbaceous clematis (group 3)
Clematis 'Fleuri' herbaceous clematis (group 3) A compact grower - ideal for a pot £14.99 Buy
clematis (group 3)
Clematis Happy Birthday ('Zohapbi') (PBR) clematis (group 3) Dark flowers become paler as they age £14.99 Buy
clematis (group 3)
Clematis 'Harlow Carr' clematis (group 3) Gently ruffled purple petals £12.99 Buy
clematis (group 3)
Clematis 'Jackmanii Superba' clematis (group 3) Luxurious dark purple flowers £10.99 Buy
clematis (group 2)
Clematis 'Nelly Moser' clematis (group 2) Huge striped flowers £9.99 Buy
clematis (group 1)
Clematis 'Purple Spider' clematis (group 1) Often has a second flush of flowers £12.99 Buy
clematis (group 2)
Clematis 'The President' clematis (group 2) Outstanding large rich-purple flowers £9.99 Buy