We have found 22 plants that meet your criteria.

Achillea filipendulina 'Cloth of Gold' Yarrow Flat, plate-like yellow flowers on tall stems £5.99 Buy
Anemone x hybrida 'Honorine Jobert' Japanese Anemone Lights up the garden in late summer £5.99 Buy
Anemone x hybrida 'Königin Charlotte' Japanese Anemone syn. Queen... Brings autumn colour to... £5.99 Buy
Angelica gigas Angelica Tall, dramatic burgundy flowers £6.99 Buy
Price Pruned
Angelica sylvestris 'Vicar's Mead' Wild Angelica Great for a wildflower garden NOW £5.99 Buy
Aster novae-angliae 'Violetta' New England Aster Beautiful deep purple flowers £6.99 Buy
Boltonia asteroides var. 'latisquama' False Starwart Delightful daisy-like white flowers £5.99 Buy
Price Pruned
Brugmansia suaveolens Angels Trumpet (syn. Datura) Stunning, night-scented blooms NOW £8.49 Buy
Echinacea purpurea Coneflower Long lasting, rosy purple flowers. £5.99 Buy
Price Pruned
Echinacea purpurea 'Magnus' Coneflower Copes well with adverse weather conditions NOW £5.99 Buy
Eupatorium rugosum 'Chocolate' White Snakeroot A late-flowering perennial with lovely, dark foliage £5.99 Buy
Gaura lindheimeri Gaura White, star-shaped flowers and long season £5.49 Buy
Salvia uliginosa Bog Sage Intense blue flowers £5.99 Buy
Selinum wallichianum Milk Parsley Flower clusters have a tiered appearance £6.99 Buy
Verbena bonariensis Verbena Lilac-purple flowers £5.49 Buy
Veronicastrum virginicum 'Album' Culver's Root Slender spires of white flowers £5.99 Buy
Price Pruned
Campanula lactiflora 'Loddon Anna' Milky Bellflower Soft lilac flowers on tall stems NOW £5.49 Buy
Cynara cardunculus 'Cardy' Cardoon A fabulous architectural plant £5.99 Buy
Price Pruned
Hedychium gardnerianum Ginger Lily Architectural foliage and fragrant yellow flowers NOW £6.99 Buy
Ligularia 'The Rocket' Golden Groundsel Towering spikes of brilliant yellow flowers £5.49 Buy