We have found 15 plants that meet your criteria.

Price Pruned
Yarrow ‘Achillea millefolium Lilac Beauty’ An unusual lilac, yarrow NOW £5.49 Buy
Hyssop ‘Agastache Black Adder’ Distinctive violet, bottlebrush flowers £5.99 Buy
Cranesbill ‘Geranium pratense Midnight Reiter’ Unusual deep purple foliage £5.99 Buy
Crocus Special Offers
Big Blue Lily-turf ‘Liriope muscari’ Purple, wand-like flowers and evergreen foliage NOW £5.99 Buy
Price Pruned
Bergamot ‘Monarda Ou Charm’ Pretty, pink flowers and purple bracts NOW £5.49 Buy
Catmint ‘Nepeta x faassenii Kit Cat’ A dwarf variety with purple flowers £5.99 Buy
Phlox ‘Phlox paniculata Franz Schubert’ Wonderful, fragrant, lilac flowers £5.99 Buy
Meadow Rue ‘Thalictrum delavayi’ Mauve-blue flowers purple stems £5.49 Buy
Verbena ‘Verbena bonariensis’ Lilac-purple flowers £5.49 Buy
Angelica ‘Angelica gigas’ Tall, dramatic burgundy flowers £6.99 Buy
Price Pruned
Milky Bellflower ‘Campanula lactiflora Loddon Anna’ Soft lilac flowers on tall stems NOW £5.49 Buy
Everlasting Sweet Pea (syn. L... ‘Lathyrus latifolius Pink Pearl’ Vigorous climber with magenta flowers £5.99 Buy
Perennial Phlox ‘Phlox paniculata Amethyst’ Tall variety with violet flowers £5.99 Buy
Culver's Root ‘Veronicastrum virginicum Lavendelturm’ Long tapering flower spires £5.49 Buy
Lesser Periwinkle ‘Vinca minor Atropurpurea’ Delicious dark damson-purple flowers £5.99 Buy